Chapter 9

There are __ unhybridized p atomic obritals in an sp'2 hybridized carbon atom

1

The Cl-Si-Cl bond angle in the SiCl,2F,2 molecule is approximately

109.5 degrees

The F-N-F bond angle in the NF,3 molecule is slightly less than

109.5 degrees

The angles between sp'2 orbitals are ____

120 degrees

There are ____ unhybridized p atomic orbitals in an sp-hybridized carbon atom

2

There are ___ sigma and ___ pie bonds in the acetylene molecule H - C -=C-H

3 and 2

there are _ sigma and _ pie bonds in the H,2C=CH,2 molecule

5 and 1

PCl,5 has ___ electron domains and a ____ molecular arrangement

5, trigonal bipyramidal

THe electron domain gemoetry and the molecular geometry of a molecule of the general formal AB,n are

sometimes the same

The hybridization of nitrogen in the HCN molecule is H-C-= N:

sp

The carbon-carbon sigma bond in ethylene, H,2C=CH,2 results from the overlap of

sp'2 hybrid orbitals

a molecule has the formula AB,3 and the central atom is in a different plane from the surrounding three atoms, its molecular shape is

trigonal pyramidal

a molecular orbital can accommodate a maximum of ____ electron(s)

two

of the molecules below, only ____ is polar SbF,5 Ash,3 I,2 SF,6 CH,4

AsH,3

Of the molecules below, only ___ is nonpolar CO,2 H,20 NH,3 HCl TeCl,2

CO,2

in order to produce sp'3 hybrid orbitals, __s atomic orbital(s) and ___ p atomic orbital(s) must be mixed

One, three

In comparing the same two atoms bonded together, the ____ the bond order, the _____ the bond length, and the _____ the bond energy

Smaller, longer smaller

The molecular geometry of the left most carbon atom in the molecule below is _ H O | || H-C-C-O-H | H

Tetrahedral

The electron domain geometry and the molecular of the general formula AB,n will always be the same if

There are no lone pairs on the central atom

For a molecular with the formula AB,3 the molecular shape is

Trigonal planar, trigonal pyramidal, or t-shaped

The molecular geometry of the right-most carbon in the molecule below is H O | || H-C-C-O-H | H

Trigonal planer

The electron domain geometry of _____ is tetrahedral CBr,4 PH,3 CCL,2Br, XeF,4 all of these except XeF,4

Trigonal pyramidal

The molecular geometry of the BrO.3- ion is

Trigonal pyramidal

the molecular geometry of ___ is square planar.

XeF,4

ONe significant difference between gases and liquids is that

a gas assumes the volume of its container

WHen four atomic orbitals are mixed to from hybrid orbitals, how many hybrid orbitals are formed?

four

According to MO theory, overlap of two p atomic obritals produces

one bonding molecular orbital and one antibonding molecular orbital

A typical double bond consists of

one sigma and one pi bond

A typical triple bond consists of

one sigma and two pi bonds

IN order to produce sp'2 hybrid orbitals, ___ s atomic orbital(s) and ____ p atomic orbital(s) must be mixed

one, two

the pie bond in ethylene H,2C=CH,2results from the overlap of

p atomic orbitals