CHEMISTRY QUESTIONS
TOPIC: CHEMICAL BONDING
01. Which of the following compounds has the greatest ionic character?
(A) SiO2
(B) ClO2
(C) CH4
(D) AlF3
(E) SO2
02. Which of the following compounds has the greatest lattice energy?
(A) KCl
(B) NaCl
(C) CaCl2
(D) MgCl2
(E) FeCl3
03. Which of the following is the correct name for the compound with the
chemical formula Mg3N2?
(A) Trimagnesium dinitrogen
(B) Trimagnesium dinitride
(C) Magnesium nitrogen
(D) Magnesium nitrate
(E) Magnesium nitride
Questions 04 and 05 refer to the following choices:
(A) N2
(B) F2
(C) O3
D) NH3
(E) CO2
04. Has one or more bonds with a bond order of 1.5
05. Has one or more bonds with a bond order of 3
06. If metal X forms an ionic chloride with the formula XCl2, which of the
following is most likely the formula for the stable phosphide of X?
, (A) XP2
(B) X2P3
(C) X3P2
(D) X2(PO4)3
(E) X3(PO4)2
07. In which of the following processes are covalent bonds broken?
(A) C10H8(s) → C10H8(g)
(B) C(diamond) → C(graphite)
(C) NaCl(s) → NaCl(molten)
(D) KCl(s) → KCl(aq)
(E) NH4NO3(s) → NH4+(aq) + NO3−(aq)
08. In which of the following processes are covalent bonds broken?
(A) Solid sodium chloride melts.
(B) Bronze (an alloy of copper and tin) melts.
(C) Table sugar (sucrose) dissolves in water.
(D) Solid carbon (graphite) sublimes.
(E) Solid carbon dioxide (dry ice) sublimes.
09. Diamond is an extremely hard substance. This quality is best explained
bythe fact that a diamond crystal (A) is ionic with a high lattice energy.
(B) is made completely of carbon, a very hard atom.
(C) is formed only under extremely high heat and pressure.
(D) has many delocalized electrons that contribute to greater van der Waal
forces.
(E) is one giant molecule in which each atom forms strong bonds with
each of its neighbors.
Questions 10–15 refer to the following answer choices:
(A) PCl5
(B) BH3
(C) NH3
(D) CO2
(E) SO2
10. The molecule with trigonal pyramidal molecular geometry 11. The
TOPIC: CHEMICAL BONDING
01. Which of the following compounds has the greatest ionic character?
(A) SiO2
(B) ClO2
(C) CH4
(D) AlF3
(E) SO2
02. Which of the following compounds has the greatest lattice energy?
(A) KCl
(B) NaCl
(C) CaCl2
(D) MgCl2
(E) FeCl3
03. Which of the following is the correct name for the compound with the
chemical formula Mg3N2?
(A) Trimagnesium dinitrogen
(B) Trimagnesium dinitride
(C) Magnesium nitrogen
(D) Magnesium nitrate
(E) Magnesium nitride
Questions 04 and 05 refer to the following choices:
(A) N2
(B) F2
(C) O3
D) NH3
(E) CO2
04. Has one or more bonds with a bond order of 1.5
05. Has one or more bonds with a bond order of 3
06. If metal X forms an ionic chloride with the formula XCl2, which of the
following is most likely the formula for the stable phosphide of X?
, (A) XP2
(B) X2P3
(C) X3P2
(D) X2(PO4)3
(E) X3(PO4)2
07. In which of the following processes are covalent bonds broken?
(A) C10H8(s) → C10H8(g)
(B) C(diamond) → C(graphite)
(C) NaCl(s) → NaCl(molten)
(D) KCl(s) → KCl(aq)
(E) NH4NO3(s) → NH4+(aq) + NO3−(aq)
08. In which of the following processes are covalent bonds broken?
(A) Solid sodium chloride melts.
(B) Bronze (an alloy of copper and tin) melts.
(C) Table sugar (sucrose) dissolves in water.
(D) Solid carbon (graphite) sublimes.
(E) Solid carbon dioxide (dry ice) sublimes.
09. Diamond is an extremely hard substance. This quality is best explained
bythe fact that a diamond crystal (A) is ionic with a high lattice energy.
(B) is made completely of carbon, a very hard atom.
(C) is formed only under extremely high heat and pressure.
(D) has many delocalized electrons that contribute to greater van der Waal
forces.
(E) is one giant molecule in which each atom forms strong bonds with
each of its neighbors.
Questions 10–15 refer to the following answer choices:
(A) PCl5
(B) BH3
(C) NH3
(D) CO2
(E) SO2
10. The molecule with trigonal pyramidal molecular geometry 11. The
