Among the following molecules bond length is short in
A
C2
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B
N2
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C
O2
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D
F2
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Solution
The correct option is BN2
As we know,
Bond length is inversely proportional to Bond order. That means, the higher the bond order, the stronger the force of attraction between the two atoms and the shorter the bond length.
The bond order of C2 molecule is 2.
The bond order of N2 molecule is 3.
O2 has two unpaired electrons in its π∗ orbitals, and a bond order of 2.
The bond order of F2 molecule is 1.
As we see N2 has the highest Bond Order. Hence, it has the shortest Bond length. Therefore, option B is correct.