Which of the following molecules is linear an | vedclass

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(C) To determine the number of lone pairs on the central atom:$1$. $C_2H_2$ (Acetylene): $H-C \equiv C-H$. The central carbon atoms have $0$ lone pair

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$ICl_2^-$

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(C) To determine the number of lone pairs on the central atom:$1$. $C_2H_2$ (Acetylene): $H-C \equiv C-H$. The central carbon atoms have $0$ lone pairs.$2$. $HCN$: $H-C \equiv N$. The central carbon atom has $0$ lone pairs.$3$. $ICl_2^-$: The central iodine atom has $7$ valence electrons,plus $1$ from the negative charge,minus $2$ used for bonding with $Cl$ atoms,leaving $6$ electrons,which equals $3$ lone pairs.$4$. $CS_2$: $S=C=S$. The central carbon atom has $0$ lone pairs.Thus,$ICl_2^-$ is linear and has the maximum number of lone pairs $(3)$.

Which of the following molecules is linear and possesses the maximum number of lone pairs on the central atom?

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