AIIMS2014Chemistry-Bond Length
AIIMS 2014 Chemistry Bond Length MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The correct order in which the O—O bond length increases is
A
H2O2 < O2 < O3
B
O3 < H2O2 < O2
C
O2 < O3 < H2O2
D
O2 < H2O2 < O3
Correct Answer
Option C
Detailed Explanation
The correct order of O—O bond lengths increases as O2 < O3 < H2O2 due to the varying bond types and electron repulsions in these molecules. O2 has a double bond, which is shorter than the single bonds in O3 (ozone) and H2O2 (hydrogen peroxide). As the number of bonds decreases and the electron repulsion increases in O3 and H2O2, the bond lengths become longer, leading to the observed trend.
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