Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Fill in the blanks with appropriate choice.
Bond order of 
is P while that of 
is Q.
Bond order of 
is R while that of 
is S
N – N bond distance T when 
changes to 
and when 
changes to 
the O – O bond distance U
P Q R S T U
A
2 
1 increases decreases
1 increases decreases
B
3 2 
decreases increases
C
3 2 
1 increases decreases
1 increases decreases
D
3 
2 increases decreases
Text Solution
Verified by ExpertsThe correct answer is:
D
B.O. 
B.O. 
Since 
has lower bond order than 
bond length of N – N in 
increases. In 
bond order increases from 2 to 2.5 hence, bond length decreases.
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