${\rm{H}} - {\rm{B}} - {\rm{H}}$ bond angle in ${\rm{BH}}_4^ - $ is:

NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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Understanding +4 | -1

\mathrm{H} - \mathrm{B} - \mathrm{H}

bond angle in

\mathrm{BH}_4^ -

is:

View answer and explanation

Correct option: C

109^\circ

Option C (

109^\circ

) is correct because

\mathrm{BH}_4^ -

has a tetrahedral geometry, and the bond angle in a tetrahedron is approximately 109.5 degrees.