JEE Main Chemistry question

Which is a correct statement about diborane structure? [DCE 2009]

(A)All H–B–H bond angles are equal
(B)All H–B bond lengths are equal
(C)It has two three-centre–2-electron bondsCorrect
(D)All hydrogen and boron atoms are in one plane

Answer: (C)

Solution

Diborane, , has four normal 2-centre–2-electron terminal bonds and two bridging 3-centre–2-electron "banana" bonds, confirming (C). The terminal and bridging H–B–H angles and bond

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Question ID VK-138219