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Q.

According to the Lewis dot structure shown, what are the formal charges of the O,C and N atoms, respectively in the cyanate ion?
$: O ::: C : N :$

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a

$\begin{array}{l} 0, 0, 0 \end{array}$

b

$+ 1, 0, - 2$

c

$\begin{aligned} - 1, 0, 0 \end{aligned}$

d

$- 1, + 1, - 1$

answer is D.

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Detailed Solution

Formal charge=Valence electrons-non bonding electrons + no of bond

$\overset{+ 1}{O} \equiv \overset{0}{C} - N^{2 -}$

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