CHE 111 C8--Chemical Bonding: Question Preview (ID: 9117)

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Ionic bonding is the * of electrons and covalent bonding is the * of electrons.
a) transfer, sharing
b) sharing, transfer

electrons are transferred from the * to the *.
a) semi-metal, metal
b) nonmetal, semi-metal
c) metal, nonmetal
d) nonmetal, metal

Lattice energy increases as ionic charges * and as their radii *.
a) increase, increase
b) increase, decrease
c) decrease, increase
d) decrease, decrease

Arrange NaF, CsI and CaO in order of decreasing lattice energy.
a) NaF, CsI, CaO
b) CsI, NaF, CaO
c) CaO, NaF, CsI
d) CsI, CaO, NaF

How many electrons are involved in a double bond?
a) 2
b) 4
c) 6
d) 8

Bond length * as the number of shared electron pairs increases.
a) increases
b) decreases
c) remains the same

The electronegativity of an atom generally decreases to the * and *.
a) right, up
b) right, down
c) left, up
d) left, down

List the following in order of decreasing bond polarity: C-F, Be-F, O-F
a) O-F, C-F, Be-F
b) C-F, Be-F, O-F
c) Be-F, C-F, O-F
d) O-F, Be-F, C-F

Bond breaking is always * and bond forming is always *.
a) endothermic, exothermic
b) exothermic, endothermic
c) heat is neither absorbed nor released during bond formation and breaking.

Ionic compounds have * melting points and covalent compounds have relative * melting ponts.
a) low, high
b) high, low

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