Chapter 4: Models of the Atom
2) Which of the following of Dalton's proposals is still valid?
A) Atoms of different elements combine to form compounds.
B) Atoms can combine in small whole number ratios.
C) Atoms can combine in more than one whole number ratio.
D) all of the above
E) none of the above
Answer: D
3) Which of the following of Dalton's proposals is still valid?
A) Atoms are indivisible.
B) Atoms are indestructible.
C) All atoms of an element are identical.
D) all of the above
E) none of the above
Answer: E
6) According to the Thomson model, what is the relative charge on an electron?
A) -1
B) +1
C) -2
D) +2
E) none of the above
Answer: A
7) According to the Thomson model, what is the relative charge on a proton?
A) -1
B) +1
C) -2
D) +2
E) none of the above
Answer: B
11) Which of the following subatomic particles are found inside the nucleus?
A) electron and neutron
B) neutron and proton
C) proton and electron
D) all of the above
E) none of the above
Answer: B
12) Which of the following subatomic particles are found outside the nucleus?
A) electron and neutron
B) neutron and proton
C) proton and electron
D) all of the above
E) none of the above
Answer: E
13) Which subatomic particle has a relative charge of -1 and a mass of ~0 amu?
A) alpha
B) electron
C) neutron
D) proton
E) none of the above
Answer: B
16) Using atomic notation, indicate the isotope having 11 p+, 12 n0, and 11 e-.
A)
Na
B)
Na
C)
Na
D)
Mg
E)
Mg
Answer: B
17) Using atomic notation, indicate the isotope having 26 p+, 32 n0, and 26 e-.
A)
Fe
B)
Fe
C)
Fe
D)
S
E)
S
Answer: B
18) Using atomic notation, indicate the isotope having 30 p+, 35 n0, and 30 e-.
A)
Zn
B)
Zn
C)
Zn
D)
Br
E)
Br
Answer: B
19) How many neutrons are in the nucleus of an atom of
O?
A) 8
B) 10
C) 18
D) 26
E) none of the above
Answer: B
28) What is the assigned mass of the reference isotope for the atomic mass scale?
A) 1.01 amu
B) 4.00 amu
C) 12.01 amu
D) 16.00 amu
E) 12 amu exactly
Answer: E
Section: 4.5 Atomic Mass
30) Given that the only naturally occurring isotope of sodium is 23Na, what is its isotopic mass? (Hint:
Refer to the Periodic Table.)
A) 11.00 amu
B) 11.99 amu
C) 12.00 amu
D) 22.99 amu
E) 34.99 amu
Answer: D
Section: 4.5 Atomic Mass
31) Given that the only naturally occurring isotope of aluminum is 27Al, what is its isotopic mass? (Hint:
Refer to the Periodic Table.)
A) 13.00 amu
B) 13.98 amu
C) 14.00 amu
D) 26.98 amu
E) 39.98 amu
Answer: D
Section: 4.5 Atomic Mass
32) Given that the only naturally occurring isotope of gold is 197Au, what is its isotopic mass? (Hint:
Refer to the Periodic Table.)
A) 79.00 amu
B) 117.97 amu
C) 118.00 amu
D) 196.97 amu
E) 275.97 amu
Answer: D
Section: 4.5 Atomic Mass
92) Which electron sublevel follows the 4p sublevel according to increasing energy?
A) 3d
B) 4d
C) 4s
D) 5s
E) 5p
Answer: D
Section: 4.10 Electroni Configuration
93) Which electron sublevel follows the 5s sublevel according to increasing energy?
A) 4p
B) 4d
C) 5p
D) 5d
E) 6s
Answer: B
Section: 4.10 Electroni Configuration
94) Which electron sublevel follows the 4d sublevel according to increasing energy?
A) 4s
B) 4p
C) 5s
D) 5p
E) 5d
Answer: D
Section: 4.10 Electroni Configuration
95) Which electron sublevel follows the 5p sublevel according to increasing energy?
A) 4d
B) 5d
C) 5s
D) 6s
E) 6p
Answer: D
Section: 4.10 Electroni Configuration
96) What is the electron configuration for an atom of fluorine?
A) 1s2 2s2 2p3
B) 1s2 2s2 2p5
C) 1s2 2s2 2p6 3s1
D) 1s2 2s2 2p6 3s2 3p5
E) none of the above
Answer: B
Section: 4.10 Electroni Configuration
97) What is the electron configuration for an atom of silicon?
A) 1s2 2s2 2p4
B) 1s2 2s2 2p6 3s2
C) 1s2 2s2 2p6 3s2 3p2
D) 1s2 2s2 2p6 3s2 3p4
E) none of the above
Answer: C
Section: 4.10 Electroni Configuration
98) What is the electron configuration for an atom of nickel?
A) 1s2 2s2 2p6 3s2 3p6 3d8
B) 1s2 2s2 2p6 3s2 3p6 4s2 3d8
C) 1s2 2s2 2p6 3s2 3p6 4s2 4p8
D) 1s2 2s2 2p6 3s2 3p6 4s2 4d8
E) none of the above
Answer: B
Section: 4.10 Electroni Configuration
99) Which element has the following electron configuration: 1s2 2s2 2p6 3s2?
A) Ca
B) Mg
C) Na
D) Si
E) none of the above
Answer: B
Section: 4.10 Electroni Configuration
100) Which element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s1?
A) Al
B) Ca
C) K
D) Na
E) none of the above
Answer: C
Section: 4.10 Electroni Configuration
101) Which element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10?
A) Ca
B) Cd
C) Kr
D) Zn
E) none of the above
Answer: D
Section: 4.10 Electroni Configuration
102) Which element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2
3d10 4p6 5s2?
A) Ca
B) Rb
C) Sn
D) Sr
E) none of the above
Answer: D
Section: 4.10 Electroni Configuration
103) Which element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2
4d5?
A) Br
B) Mn
C) Nb
D) Tc
E) none of the above
Answer: D
Section: 4.10 Electroni Configuration
104) Which element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2
3d10 4p6 5s2 4d10 5p2?
A) Sr
B) Zr
C) Sn
D) Hf
E) none of the above
Answer: C
Section: 4.10 Electroni Configuration
118) How many orbitals are in the 4s subshell?
A) 1
B) 3
C) 4
D) 5
E) none of the above
Answer: A
Section: 4.11 Quantum Mechanical Model of the Atom
119) How many orbitals are in the 4p subshell?
A) 1
B) 3
C) 4
D) 5
E) none of the above
Answer: B
Section: 4.11 Quantum Mechanical Model of the Atom
120) How many orbitals are in the 4d subshell?
A) 1
B) 3
C) 4
D) 5
E) none of the above
Answer: D
Questions for Chapter 5: The Periodic Table
150) What is the electron configuration for a nitride ion, N3-?
A) 1s2 2s2 2p3
B) 1s2 2s2 2p4
C) 1s2 2s2 2p5
D) 1s2 2s2 2p6
E) none of the above
Answer: D
Section: 5.10 Ionic Charges
151) What is the electron configuration using core notation for P3-?
A) [Ne] 3s2
B) [Ne] 3s2 3p3
C) [Ne] 3p6
D) [Ar]
E) none of the above
Answer: D
Section: 5.10 Ionic Charges
152) What is the electron configuration using core notation for Se2-?
A) [Ar] 4s2 3d10 4p2
B) [Ar] 4s2 3d10 4p4
C) [Ar] 4s2 4p6
D) [Kr]
E) none of the above
Answer: D
Section: 5.10 Ionic Charges
153) What is the electron configuration using core notation for I-?
A) [Kr] 5s2 4d10 5p4
B) [Kr] 5s2 4d10 5p5
C) [Kr] 5s2 5p6
D) [Xe]
E) none of the above
Answer: D
Section: 5.10 Ionic Charges
135) What is the predicted ionic charge for a P ion?
A) 3+
B) 3C) 5+
D) 5E) none of the above
Answer: B
Section: 5.10 Ionic Charges
136) Which of the following ions is isoelectronic with the noble gas neon?
A) FB) Na+
C) Mg2+
D) Al3+
E) all of the above
Answer: E
Section: 5.10 Ionic Charges
142) What is the electron configuration for a sodium ion, Na+?
A) 1s2 2s2 2p6
B) 1s2 2s2 2p6 3s1
C) 1s2 2s2 2p6 3s2
D) 1s2 2s2 2p6 3s2 3p1
E) none of the above
Answer: A
Section: 5.10 Ionic Charges
143) What is the electron configuration for a magnesium ion, Mg2+?
A) 1s2 2s2 2p6
B) 1s2 2s2 2p6 3s1
C) 1s2 2s2 2p6 3s2
D) 1s2 2s2 2p6 3s2 3p1
E) none of the above
Answer: A
Section: 5.10 Ionic Charges
144) What is the electron configuration for an aluminum ion, Al3+?
A) 1s2 2s2 2p6
B) 1s2 2s2 2p6 3s2
C) 1s2 2s2 2p6 3p1
D) 1s2 2s2 2p6 3s2 3p1
E) none of the above
Answer: A
Section: 5.10 Ionic Charges
145) What is the electron configuration using core notation for Ca2+?
A) [Ar]
B) [Ar] 4s2
C) [Ar] 4s2 4d8
D) [Ar] 4d10
E) none of the above
Answer: A
Section: 5.10 Ionic Charges
146) What is the electron configuration using core notation for Co3+?
A) [Ar]
B) [Ar] 4s2 3d7
C) [Ar] 4s2 3d4
D) [Ar] 3d6
E) none of the above
Answer: D
Section: 5.10 Ionic Charges
115) Which of the following groups of elements has the highest ionization energy?
A) Group IA/1
B) Group IIA/2
C) Group IIB/12
D) Group VIIA/17
E) Group VIIIA/18
Answer: E
Section: 5.9 Ionization Energy
116) Which of the following groups of elements has the lowest ionization energy?
A) Group IA/1
B) Group IIA/2
C) Group IIB/12
D) Group VIIA/17
E) Group VIIIA/18
Answer: A
Section: 5.9 Ionization Energy
117) Which of the following elements has the highest ionization energy?
A) H
B) He
C) Ne
D) Cl
E) F
Answer: B
Section: 5.9 Ionization Energy
118) Which of the following elements has the highest ionization energy?
A) Cl
B) Br
C) Ar
D) Kr
E) K
Answer: C
Section: 5.9 Ionization Energy
119) Which of the following elements has the lowest ionization energy?
A) H
B) He
C) Li
D) Ba
E) B
Answer: C
Section: 5.9 Ionization Energy
120) Which of the following elements has the lowest ionization energy?
A) K
B) Ca
C) Rb
D) Sr
E) Kr
Answer: C
Section: 5.9 Ionization Energy
121) Which of the following groups has a predictable ionic charge of one positive?
A) Group IA/1
B) Group IB/11
C) Group IIIA/13
D) Group VIIA/17
E) Group VIIIA/18
Answer: A
Section: 5.10 Ionic Charges
122) Which of the following groups has a predictable ionic charge of two positive?
A) Group IIA/2
B) Group IIB/12
C) Group VIA/16
D) Group VIB/6
E) Group VIIIA/18
Answer: A
Section: 5.10 Ionic Charges
123) Which of the following groups has a predictable ionic charge of three positive?
A) Group IIIA/13
B) Group IIIB/3
C) Group VA/15
D) Group VB/5
E) Group VIIIA/18
Answer: A
Section: 5.10 Ionic Charges
129) What is the predicted ionic charge for an Al ion?
A) 1+
B) 1C) 3+
D) 3E) none of the above
Answer: C
Section: 5.10 Ionic Charges
105) Predict the number of valence electrons for a chlorine atom.
A) 1
B) 5
C) 7
D) 17
E) 35
Answer: C
Section: 5.7 Valence Electrons
106) Which of the following is the electron dot formula for an atom of potassium?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: A
Section: 5.8 Electroni Dot Formulas
107) Which of the following is the electron dot formula for an atom of strontium?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: B
Section: 5.8 Electroni Dot Formulas
108) Which of the following is the electron dot formula for an atom of boron?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: B
Section: 5.8 Electroni Dot Formulas
109) Which of the following is the electron dot formula for an atom of carbon?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: C
Section: 5.8 Electroni Dot Formulas
110) Which of the following is the electron dot formula for an atom of nitrogen?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: C
Section: 5.8 Electroni Dot Formulas
111) Which of the following is the electron dot formula for an atom of oxygen?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: D
Section: 5.8 Electroni Dot Formulas
112) Which of the following is the electron dot formula for an atom of fluorine?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: D
Section: 5.8 Electroni Dot Formulas
105) Predict the number of valence electrons for a chlorine atom.
A) 1
B) 5
C) 7
D) 17
E) 35
Answer: C
Section: 5.7 Valence Electrons
106) Which of the following is the electron dot formula for an atom of potassium?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: A
Section: 5.8 Electroni Dot Formulas
107) Which of the following is the electron dot formula for an atom of strontium?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: B
Section: 5.8 Electroni Dot Formulas
108) Which of the following is the electron dot formula for an atom of boron?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: B
Section: 5.8 Electroni Dot Formulas
109) Which of the following is the electron dot formula for an atom of carbon?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: C
Section: 5.8 Electroni Dot Formulas
110) Which of the following is the electron dot formula for an atom of nitrogen?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: C
Section: 5.8 Electroni Dot Formulas
111) Which of the following is the electron dot formula for an atom of oxygen?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: D
Section: 5.8 Electroni Dot Formulas
112) Which of the following is the electron dot formula for an atom of fluorine?
A) (a)
B) (b)
C) (c)
D) (d)
E) (e)
Answer: D
Section: 5.8 Electroni Dot Formulas
58) Which of the following elements has the smallest atomic radius?
A) C
B) N
C) O
D) P
E) S
Answer: C
Section: 5.4 Periodic Trends
71) Which of the following has chemical properties most similar to sodium?
A) He
B) K
C) Mg
D) B
E) Fe
Answer: B
Section: 5.5 Properties of Elements
72) Which of the following has chemical properties most similar to zinc?
A) Al
B) Ga
C) Cd
D) Ag
E) Cu
Answer: C
Section: 5.5 Properties of Elements
73) Which of the following has chemical properties most similar to arsenic?
A) Ar
B) Cl
C) Ge
D) Sb
E) Se
Answer: D
Section: 5.5 Properties of Elements
74) Which of the following does not have chemical properties similar to Mg?
A) barium
B) beryllium
C) calcium
D) manganese
E) strontium
Answer: D
Section: 5.5 Properties of Elements
76) Which of the following does not have chemical properties similar to Rn?
A) argon
B) krypton
C) neon
D) radium
E) xenon
Answer: D
Section: 5.5 Properties of Elements
91) What is the core notation for the electron configuration of an aluminum atom?
A) [Ne]
B) [Ne] 2s2 2p1
C) [Ne] 3s2 3p1
D) [Ne] 3s2 3d1
E) [Ar]
Answer: C
Section: 5.6 Blocks of Elements
92) What is the core notation for the electron configuration of a potassium atom?
A) [Ar]
B) [Ar] 4s1
C) [Ar] 4p1
D) [Ar] 4d1
E) [Kr]
Answer: B
Section: 5.6 Blocks of Elements
93) What is the core notation for the electron configuration of an iodine atom?
A) [Kr]
B) [Kr] 5s2 4p5
C) [Kr] 5s2 4d10 5p5
D) [Kr] 5s2 4d10 5d6
E) [Xe]
Answer: C
Section: 5.6 Blocks of Elements
94) Which element has the following electron configuration: [Ar] 4s2 3d5?
A) Br
B) Cl
C) Kr
D) Mn
E) Tc
Answer: D
Section: 5.6 Blocks of Elements
95) Which element has the following electron configuration: [Kr] 5s2 4d10 5p2?
A) Pb
B) Sn
C) Sr
D) Xe
E) Zr
Answer: B
Section: 5.6 Blocks of Elements
96) Which element has the following electron configuration: [Xe] 6s2?
A) Ba
B) Cs
C) Hf
D) Pb
E) Sr
Answer: A
Section: 5.6 Blocks of Elements
97) Predict the number of valence electrons for a Group IIA/2 element.
A) 1
B) 2
C) 3
D) 6
E) 8
Answer: B
Section: 5.7 Valence Electrons
98) Predict the number of valence electrons for a Group IIIA/13 element.
A) 2
B) 3
C) 5
D) 8
E) 13
Answer: B
Section: 5.7 Valence Electrons
99) Predict the number of valence electrons for a Group IVA/14 element.
A) 2
B) 4
C) 6
D) 8
E) 14
Answer: B
Section: 5.7 Valence Electrons
100) Predict the number of valence electrons for a Group VA/15 element.
A) 2
B) 3
C) 5
D) 8
E) 15
Answer: C
Section: 5.7 Valence Electrons
101) Predict the number of valence electrons for a Group VIA/16 element.
A) 2
B) 4
C) 6
D) 8
E) 16
Answer: A
Section: 5.7 Valence Electrons
37) Which of the following is a noble gas?
A) Au
B) Kr
C) N
D) No
E) none of the above
Answer: B
Section: 5.3 Groups and Periods of Elements
38) Which of the following is a rare earth element?
A) Al
B) Be
C) Li
D) Sc
E) none of the above
Answer: D
Section: 5.3 Groups and Periods of Elements
39) Which of the following is a rare earth element?
A) Ba
B) Cr
C) La
D) Th
E) none of the above
Answer: C
Section: 5.3 Groups and Periods of Elements
40) Which of the following is a rare earth element?
A) B
B) P
C) U
D) Y
E) none of the above
Answer: D
Section: 5.3 Groups and Periods of Elements
41) Which of the following is the highest atomic mass lanthanide?
A) Ce
B) Lr
C) Lu
D) Th
E) none of the above
Answer: C
Section: 5.3 Groups and Periods of Elements
48) Which of the following is a general trend in the periodic table for the metallic character of
the elements?
A) increases from left to right, increases from bottom to top
B) increases from left to right, decreases from bottom to top
C) decreases from left to right, increases from bottom to top
D) decreases from left to right, decreases from bottom to top
E) none of the above
Answer: D
Section: 5.4 Periodic Trends
49) Which of the following is a general trend in the periodic table for the atomic radius of the
elements?
A) increases from left to right, increases from bottom to top
B) increases from left to right, decreases from bottom to top
C) decreases from left to right, increases from bottom to top
D) decreases from left to right, decreases from bottom to top
E) none of the above
Answer: D
Section: 5.4 Periodic Trends
9) The modern periodic law states that the properties of the elements repeat when the periodic
table is arranged according to which of the following?
A) increasing atomic number
B) increasing mass number
C) increasing atomic mass
D) increasing isotopic mass
E) none of the above
Answer: A
Section: 5.2 The Periodic Law Concept
10) Which of the following is a representative element?
A) B
B) Ba
C) Br
D) all of the above
E) none of the above
Answer: D
Section: 5.3 Groups and Periods of Elements
11) Which of the following is a transition element?
A) Cu
B) Ag
C) Au
D) all of the above
E) none of the above
Answer: D
Section: 5.3 Groups and Periods of Elements
13) Which fourth period representative element has the highest atomic number?
A) Ca
B) Kr
C) Pb
D) Zn
E) none of the above
Answer: B
Section: 5.3 Groups and Periods of Elements
14) Which fourth period transition element has the highest atomic number?
A) Ca
B) Cd
C) Kr
D) Zn
E) none of the above
Answer: D
Section: 5.3 Groups and Periods of Elements
15) Which fifth period representative element has the highest atomic number?
A) Bi
B) Cd
C) Sr
D) Xe
E) none of the above
Answer: D
Section: 5.3 Groups and Periods of Elements
16) Which fifth period transition element has the highest atomic number?
A) Cd
B) Hg
C) Sr
D) Xe
E) none of the above
Answer: A
Section: 5.3 Groups and Periods of Elements
17) Which of the following elements are fourth period semimetals?
A) Si and Ge
B) Ge and As
C) Sb and Te
D) Po and At
E) none of the above
Answer: B
Section: 5.3 Groups and Periods of Elements
_____________
1) The compound TiO2 is classified as which of the following?
A) binary ionic
B) ternary ionic
C) binary molecular
D) binary acid
E) ternary oxyacid
Answer: A
Section: 6.1 Classification of Compounds
2) The compound Ag2S is classified as which of the following?
A) binary ionic
B) ternary ionic
C) binary molecular
D) binary acid
E) ternary oxyacid
Answer: A
Section: 6.1 Classification of Compounds
3) The compound Au2Se3 is classified as which of the following?
A) binary ionic
B) ternary ionic
C) binary molecular
D) binary acid
E) ternary oxyacid
Answer: A
Section: 6.1 Classification of Compounds
4) The compound CaCO3 is classified as which of the following?
A) binary ionic
B) ternary ionic
C) binary molecular
D) binary acid
E) ternary oxyacid
Answer: B
Section: 6.1 Classification of Compounds
5) The compound Na2SO4 is classified as which of the following?
A) binary ionic
B) ternary ionic
C) binary molecular
D) binary acid
E) ternary oxyacid
Answer: B
Section: 6.1 Classification of Compounds
6) The compound Co(NO3)3 is classified as which of the following?
A) binary ionic
B) ternary ionic
C) binary molecular
D) binary acid
E) ternary oxyacid
Answer: B
Section: 6.1 Classification of Compounds
7) The compound H2O is classified as which of the following?
A) binary ionic
B) ternary ionic
C) binary molecular
D) binary acid
E) ternary oxyacid
Answer: C
Section: 6.1 Classification of Compounds
8) The compound NH3 is classified as which of the following?
A) binary ionic
B) ternary ionic
C) binary molecular
D) binary acid
E) ternary oxyacid
Answer: C
Section: 6.1 Classification of Compounds
16) The Cu2+ ion is classified as which of the following?
A) monoatomic cation
B) monoatomic anion
C) polyatomic cation
D) polyatomic anion
E) none of the above
Answer: A
Section: 6.1 Classification of Compounds
17) The Co2+ ion is classified as which of the following?
A) monoatomic cation
B) monoatomic anion
C) polyatomic cation
D) polyatomic anion
E) none of the above
Answer: A
Section: 6.1 Classification of Compounds
27) The phosphite ion, PO33-, is classified as which of the following?
A) monoatomic cation
B) monoatomic anion
C) polyatomic cation
D) polyatomic anion
E) none of the above
Answer: D
Section: 6.1 Classification of Compounds
28) What is the systematic name for K+?
A) kalium ion
B) phosphorus ion
C) potassium ion
D) potassium(I) ion
E) none of the above
Answer: C
Section: 6.2 Monoatomic Ions
48) What is the systematic name for PO43-?
A) phosphide ion
B) phosphite ion
C) phosphate ion
D) tetraphosphate ion
E) none of the above
Answer: C
Section: 6.3 Polyatomic Ions
49) What is the systematic name for NH4+?
A) ammonium ion
B) ammonia ion
C) nitrate ion
D) nitrite ion
E) none of the above
Answer: A
Section: 6.3 Polyatomic Ions
50) What is the chemical formula for the hypochlorite ion?
A) ClOB) ClO2C) ClO3D) ClO4E) none of the above
Answer: A
Section: 6.3 Polyatomic Ions
51) What is the chemical formula for the perchlorate ion?
A) ClOB) ClO2C) ClO3D) ClO4E) none of the above
Answer: D
Section: 6.3 Polyatomic Ions
52) What is the chemical formula for the sulfite ion?
A) SO3B) SO32C) SO4D) SO42E) none of the above
Answer: B
Section: 6.3 Polyatomic Ions
63) What is the chemical formula for the ternary compound composed of Na+ and CO32- ions?
A) NaCO3
B) Na2CO3
C) Na(CO3)2
D) Na2(CO3)2
E) none of the above
Answer: B
Section: 6.4 Writing Chemical Formulas
64) What is the chemical formula for the ternary compound composed of Co3+ and SO42- ions?
A) CoSO4
B) Co2SO4
C) Co2(SO4)3
D) Co3(SO4)2
E) none of the above
Answer: C
Section: 6.4 Writing Chemical Formulas
65) What is the chemical formula for the ternary compound composed of Ag+ and NO3- ions?
A) AgNO3
B) Ag3NO3
C) Ag(NO3)3
D) Ag3(NO3)3
E) none of the above
Answer: A
Section: 6.4 Writing Chemical Formulas
66) What is the chemical formula for the ternary compound composed of Ca2+ and PO43- ions?
A) CaPO4
B) Ca2(PO4)3
C) Ca3(PO4)2
D) Ca6(PO4)6
E) none of the above
Answer: C
Section: 6.4 Writing Chemical Formulas
79) What is the chemical formula for mercuric nitride?
A) Hg2N3
B) Hg3N2
C) (Hg2)2N3
D) (Hg2)3N2
E) none of the above
Answer: B
Section: 6.5 Binary Ionic Compounds
80) What is the chemical formula for cobalt(II) bromide?
A) Co2Br
B) CoBr2
C) Co3Br2
D) Co2Br3
E) none of the above
Answer: B
Section: 6.5 Binary Ionic Compounds
81) What is the chemical formula for cobalt(III) bromide?
A) Co3Br
B) CoBr3
C) Co3Br2
D) Co2Br3
E) none of the above
Answer: B
Section: 6.5 Binary Ionic Compounds
126) What is the chemical formula for iodine heptafluoride?
A) IF
B) IF6
C) IF7
D) I2F6
E) none of the above
Answer: C
Section: 6.7 Binary Molecular Compounds
127) What is the chemical formula for dinitrogen trioxide?
A) N2O
B) N2O3
C) N2O4
D) N2O5
E) none of the above
Answer: B
Section: 6.7 Binary Molecular Compounds