Sodium borohydride, NaBH4, and boron trifluoride, BF3, are compounds of boron. What are the shapes around boron in the borohydride ion and in boron trifluoride?

Compound 1: Sodium borohydride

In sodium borohydride (NaBH4), B is a central metal.

Electronic configuration of B is 1s2 2s2 2p1.

B undergoes sp3 hybridization in NaBH4, to generate 4 hybrid orbitals. These hybrid orbitals, forms sigma bond with 4 'H' atoms. Due to this, the structure of sodium borohydride in tetrahedral.

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Compound 2: B oron trifluoride

In boron trifluoride (BF3), B is a central metal.

Electronic configuration of B is 1s2 2s2 2p1.

B undergoes sp2 hybridization in NaBH4, to generate 3 hybrid orbitals. These hybrid orbitals, forms sigma bond with 3 'H' atoms. Due to this, the structure of boron trifluoride is triangular planner.