Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Linear molecules have a central atom with two electron domains (either two bonding pairs or one bonding pair and one lone pair, if the lone pair is not considered for geometry).

${\mathrm{SnCl}}_2$: Sn has 2 bonding pairs and 1 lone pair. Electron geometry is trigonal planar, molecular geometry is bent.

${\mathrm{NCO}}^{-}$: Central C has 2 bonding pairs, no lone pairs. Linear.

${\mathrm{NO}}_2^{+}$: Central N has 2 bonding pairs, no lone pairs. Linear.

${\mathrm{CS}}_2$: Central C has 2 bonding pairs, no lone pairs. Linear.