Question

Explain the shapes of the following on the basis of VSEPR theory:
(i) BeCl2
(ii) PH4 +
(iii) PF5
(iv) SF6
____________
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Answer 1

Valence shell electron pair repulsion theory, or VSEPR theory, is a model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.

°In fact, beryllium chloride BeCl2, with a divalent central atom, is a linear molecule.

°PH4+ is tetratetrahedral

°PF5 is Trigonal bipyramid

°SF6 octahedral