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Question

Which of the following molecules shape can not be predicted by VSEPR theory?

A
BeCl2
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B
BF3
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C
CH4
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D
C2H6
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Solution

The correct option is D C2H6
VSEPR theory explains bond angles in molecules with three or more than three atoms in which all atoms are attached to a single atom (central atom) through covalent bonds.
But in C2H6 the hydrogen atoms are attached to two carbon atoms. There is no central atom in C2H6. Therefore, shape of C2H6 cannot be predicted by VSEPR theory.

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