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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掳. 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掳. The equatorial bonds have a bond angle of 120掳.

03

 SeF4

The selenium atom is sp3d hybridized with a see saw shape. The bond angles are 120掳and 90掳 .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掳 . The lone pairs occupy the equatorial positions of the trigonal bipyramidal geometry.

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Most popular questions from this chapter

Ethylene, C2H4, and tetrafluoroethylene, C2F4, are used to makethe polymers polyethylene and polytetrafluoroethylene (Teflon), respectively.

  1. Draw the Lewis structures for C2H4 , and C2F4, and give the ideal H-C-H and F-C-F bond angles.
  2. The actual H-C-H and F-C-F bond angles arelocalid="1658846362859" 117.4鈭�and112.4鈭�, respectively. Explain these deviations.

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

(a)

(b)

(c)


Question: Draw a Lewis structure for a resonance form of each ion with the lowest possible formal charges, show the charges, and give oxidation numbers of the atoms:

a) BrO3

b) SO32-.

State an ideal value for each of the bond angles in each molecule, and note where you expect deviations:

(a)

(b)

(c)

Hydrogen cyanide can be catalytically reduced with hydrogen to form methylamine. Use Lewis structures and bond energies to determine Heat of reaction.

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