Page 96 - Theory and Problems of BEGINNING CHEMISTRY

CHAP. 5] CHEMICAL BONDING 85

Ans. ClO 2 − ClO 3 − C 2 O 4 2−

Fe 2+ Fe(ClO 2 ) 2 Fe(ClO 3 ) 2 FeC 2 O 4
Cr 3+ Cr(ClO 2 ) 3 Cr(ClO 3 ) 3 Cr 2 (C 2 O 4 ) 3

5.63. Draw an electron dot diagram for HNO 3 . Note: As a rule, hydrogen atoms do not bond to double-bonded oxygen
atoms.
Ans. O
HO N O

The hydrogen is bonded to one of the single-bonded oxygen atoms.

5.64. Draw electron dot diagrams for H 3 PO 4 ,H 3 PO 3 , and H 3 PO 2 . Hint: Four atoms are bonded directly to the phosphorus
atom in each case.
Ans. . H
O O H
H O P O H H O P O H H O P O
O H H

5.65. Which of the following compounds do not obey the octet rule: (a) ICl 3 ,(b)SF 4 ,(c)H 2 O 2 , and (d) BrF 3 ?
Ans. (a), (b), and (d).