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Chapter 10: Q10.40P (page 407)

Determine the shape, ideal bond angle(s), and the direction of any deviation from those angles for each of the following:

(a)ClO2-

(b)PCl5

(c)SeF4

(d)KrF4

Short Answer

Expert verified

The shapes and bond angles of molecules can be determined from the VSEPR theory. The deviations arise mainly due to lone pair-lone pair repulsions.

Step by step solution

01

 ClO2-

The shape of the molecule isbent, with an expected bond angle of 120°. The presence of lone pair decreases the bond angle than the expected

02

Step 2:  PCl5

PCl5has a structure of trigonal bipyramidal. The axial bonds have a bond angle of 180°. The equatorial bonds have a bond angle of 120°.

03

 SeF4

The selenium atom is sp3d hybridized with a see saw shape. The bond angles are 120°and 90° .However, the bond angle may decrease due presence of lone pairs around the central atom.

04

Step 4: KrF4

The shape of the molecule islinear with bond angle of 180° . The lone pairs occupy the equatorial positions of the trigonal bipyramidal geometry.

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Most popular questions from this chapter

Consider the following reaction of silicon tetrafluoride: SiF4+F− →SiF5−

  1. Which depiction below best illustrates the change in molecular shape around Si?
  2. Give the name and AXmEn designation of each shape in the depiction chosen in part (a).

Arrange the following AFn species in order of increasing F-A-F bond angles:BF3 ,role="math" localid="1656920312687" BeF2 , CF4,NF3,OF2-.

Name the shape and give the AXmEnclassification and ideal bond angle(s) for each of the following general molecules:

(a)

(b)

(c)


Using bond lengths in Table 9.3 (p. 353) and assuming ideal geometry, calculate each of the following distances:

  1. Between H atoms inC2H2
  2. Between F atoms in SF6(two answers)
  3. Between equatorial F atoms in PF5

Like several other bonds, carbon-oxygen bonds have lengths and strengths that depend on the bond order. Draw Lewis structures for the following species, and arrange them in order of increasing carbon-oxygen bond length and then by increasing carbon-oxygen bond strength:

  1. CO
  2. CO32-
  3. H2CO
  4. H4CO
  5. HCO3-(H attached to O).
See all solutions

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