Arrange the following in increasing order of total number of possible adjacent bond angles?

A
$\begin{aligned} {CCl}_{4} > {SF}_{6} > {IF}_{7} \end{aligned}$
B
${CCl}_{4} < {SF}_{6} < {IF}_{7}$
C
${CCl}_{4} = {SF}_{6} = {IF}_{7}$
D
None of these

Solution:

The bond angle might change due to atoms or groups linked to the core atom repelling one another. In all the given compound the core atom has changes as a result the f total number of possible adjacent bond angles changes.

The increasing order of total number of possible adjacent bond angles is,

${CCl}_{4} < {SF}_{6} < {IF}_{7}$

Solution:

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