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What is the structure of phosphine?

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in Chemistry – Class 12 by (188k points)
What is the structure of phosphine?

(a) Trigonal pyramidal

(b) Trigonal bi-pyramidal

(c) Rhombohedral

(d) Pyramidal

This question was addressed to me during an online exam.

I want to ask this question from P-Block Elements in chapter P-Block Elements of Chemistry – Class 12

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Right option is (a) Trigonal pyramidal

Easy explanation: Phosphine has a trigonal pyramidal structure with molecular symmetry. The length of the bond between phosphorous and hydrogen is 1.42 × 10^-10 m and the bond angles are equal and are known to be 93.5°.

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