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  • In , the relation between bridge bond and terminal bond is<div class='qna-opti

In \mathrm{B_2H_6}, the relation between bridge bond and terminal bond is

Option: 1

Bridge bond is longer than terminal bond


Option: 2

Terminal bond is longer than bridge bond


Option: 3

Terminal bond is equal to bridge bond


Option: 4

None


Answers (1)

best_answer

As we have learnt,

B2H6 has two types of B-H bond.

  1. \mathrm{B-H_{t}\rightarrow} Normal covalent bond (2c-2e bond)
  2. \mathrm{B-H_{b}\rightarrow} Bond between three atoms, (B-Hb-B), (3c-2e bond)

The bridged bonds are longer than the terminal bonds as the bridged bonds are electron deficient.

 Length of terminal B-H bond is 119pm while length of bridge bond is 134pm

Therefore, option (1) is correct.

Posted by

Gunjita

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