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Question:

The number of 2-centre-2-electron and 3-centre-2-electron bonds in B2H6 respectively?

2 and 1

4 and 2

2 and 4

2 and 2

Solution:

According to structure , There are four 2-centre-2-electron bonds and two 3-centre-2-electron bonds in B2H6. Hence, the correct option is D.