The set of molecules in which the central ato | vedclass

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(D) The octet rule,proposed by Lewis,states that atoms tend to bond such that they have $8$ electrons in their valence shell,achieving a stable noble

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$SF_6, PCl_5, XeF_2$

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(D) The octet rule,proposed by Lewis,states that atoms tend to bond such that they have $8$ electrons in their valence shell,achieving a stable noble gas configuration.In $SF_6$,the central $S$ atom has $12$ valence electrons.In $PCl_5$,the central $P$ atom has $10$ valence electrons.In $XeF_2$,the central $Xe$ atom has $10$ valence electrons.Since these central atoms do not have $8$ electrons,they are examples of an expanded octet and do not obey the octet rule.

The set of molecules in which the central atom does not obey the octet rule is

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If compound $MX_4$ is non-polar and has no lone pair at the central atom,then the bond angle $\angle XMX$ in the compound may be:

$O-O$ bond length in $H_2O_2$ is $\underline{X}$ than the $O-O$ bond length in $F_2O_2$. The $O-H$ bond length in $H_2O_2$ is $Y$ than that of the $O-F$ bond in $F_2O_2$. Choose the correct option for $\underline{X}$ and $\underline{Y}$ from the given below.

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