Which of the following statements are correct? Answer on the basis of figure.

(A) The two bridged hydrogen atoms and the two boron atoms lie in one plane.

(B) Out of six B - H, bonds two bonds can be described in terms of 3 centre 2-electron bonds.

(C) Out of six B- H bonds four B- H bonds can be described in terms of 3 centre 2 electron bonds.
(D) The four terminal B - H bonds are two centre-two electron regular bonds.

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alok kumar singh | Contributor-Level 10

5 months ago

This is a Multiple Choice Questions as classified in NCERT Exemplar

(A), (B) & (D)

Two hydrogens forming bridge in B₂H₆ are peculiar in bonding and can be termed as 3 -centered-2-electron bond or banana bond. 1 s orbital of each hydrogen overlaps with the hybrid orbital of one of the boron then delocalising the 2e−over three atoms making 3 -centered-2-electron bond.

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