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Chemical Bonding
1. Which of the following compounds has the greatest ionic character?
(A) SiO,
(B) ClO,
(C) CH,
(D) AIF,
(E) SO,
2. Which of the following compounds has the greatest lattice energy?
(A) KCl
(B) NaCl
(C) CaCl,
(D) MgCl,
(E) FeCl,
3. Which of the following is the correct name for the compound with the
chemical formula Mg,N,?
(A) Trimagnesiumdinitrogen
(B) Trimagnesiumdinitride
(C) Magnesium nitrogen
(D) Magnesium nitrate
(E) Magnesium nitride
4. Questions 54 and 55 refer to the following choices:
(A) No
(B) F,
(C) O;
(D) NH;
(E) CO,
12
54.
55.
56.
574
58.
59.» 500 AP Chemistry Questions to Know by Test Day
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5. Has one or more bonds with a bond order of 1.5
Has one or more bonds. with a bond order of 3
If metal X forms an ionic chloride with the formula XCl,, which of the
following is most likely the formula for the stable phosphide of X?
(A) XP,
(B) X,P,
Ki xe
(D) X,(PO,)3
(E) X3(PO4)2In which of the following processes are covalent bonds broken?
(A) CyoHge > Cio ge)
(B) eianoid) me C Graphite)
(C) NaCl, > NaCl pnotten)
(D) KCly > KCla,)
(E) NH,NO3,, > NH 4″ (aq) NOs (ag)
6. 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.
7. Diamond is an extremely hard substance. This quality is best explained by
the 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 60-65 refer to the following answer choices: (A) PCI, (B) BH, (©) NH;
(D) CO,
(E) SO,
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