Question

Which is not an electrophile?

Answer 1

Electrophile:

1. The element that takes away the electrons from other element is an electrophile.
2. The element has an electron deficiency tendency.
3. Examples: Carbocations (${\mathrm{CH}}_3^{+}$) and neutral molecules having functional groups like the carbonyl group ($>\mathrm{C}=\mathrm{O}$) or alkyl halides (${\mathrm{R}}_3\mathrm{C}-\mathrm{X}$, where X is a halogen).

Non-electrophile element:

1. The Sodium-ion (${\mathrm{Na}}^{+}$) has a non-electrophile element because it forms a complete octet.
2. Since the Sodium atom has an electronic configuration of $\left[\mathrm{Ne}\right]3{\mathrm{s}}^1$, it becomes Sodium-ion after one electron is donated, and its electronic configuration becomes $\left[\mathrm{Ne}\right]$, the same as the electronic configuration of noble gases, and it becomes stable and non-electrophile.