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(D) To determine the number of lone pairs on the central atom,we use the formula: $	ext{Lone pairs} = 	ext{Steric number} - 	ext{Number of bonded a

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$[I_3]^-$

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(D) To determine the number of lone pairs on the central atom,we use the formula: $	ext{Lone pairs} = 	ext{Steric number} - 	ext{Number of bonded atoms}$.      Compound    Lone pairs on central atom        $A$. $[ClO_3]^-$    $1$        $B$. $XeF_4$    $2$        $C$. $SF_4$    $1$        $D$. $[I_3]^-$    $3$  In $[I_3]^-$,the central iodine atom has $3$ lone pairs. Therefore,it has the maximum number of lone pairs.

Which of the following compounds has the maximum number of lone pairs on the central atom?

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