Question

In the thiocyanate ion, $SC{N}^{-}$, three resonance structures are consistent with the electron-dot method. Structure A has only one negative formal charge on the nitrogen atom, the most electron negative atom in the ion. Structure B has a single negative charge on the $S$, which is less electronegative than $N$. Structure C has charges of $-2$ on $N$ and $+1$ on S, consistent with the relative electronegativities of the atom s but with a larger charger and greater charge separation than the first.

Predict the hybridization of an atom which is bonded with $H$ in the structure of $HNCS$.

• A. $sp$
• B. $s{p}^2$
• C. $s{p}^3$
• D. no hydridization

Answer 1

The correct option is B $s{p}^2$

In the given structures, the $H$ atom is attached to an atom which is bonded to another atom via a double bond. This indcates $s{p}^2$ hybridization.