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Shape and Geometry Using VSEPR

The shapes of...

Question

The shapes of $P C l_{4}^{+}, P C l_{4}^{-}$ and $A s C l_{5}$ are respectively:

A

square planar, tetrahedral and see-saw

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B

tetrahedral, see-saw and trigonal bipyramidal

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C

tetrahedral, square planar and pentagonal bipyramidal

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D

trigonal bipyramidal, tetrahedral and square pyramidal

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Solution

The correct option is B tetrahedral, see-saw and trigonal bipyramidal
The molecules assume different geometry based on the number of bond pairs/lone pairs in the valence shell of the central atom. $P C l_{4}^{+}$ has four bond pairs and hence, it is tetrahedral in shape.

$P C l_{4}^{-}$ has 4 bond pairs and one lone pair and hence its geometry is trigonal bipyramidal its shape is see-saw.

$A s C l_{5}$ has 5 bond pairs and hence, it is trigonal bipyramidal in shape.

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Shape and Geometry Using VSEPR

Standard XIII Chemistry

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