# Which is more stable cl- or chlorine free redical ?

Jul 3, 2016

The neutral $C l \cdot$ radical should be far more reactive than $C {l}^{-}$, chloride anion.

#### Explanation:

The chlorine radical has 7 valence electrons, and in the very fact of making a $\text{2-centre, 2 electron bond}$ it would generate another radical to continue the chain.

$C l \cdot + C {H}_{4} \rightarrow \cdot C {H}_{3} + H - C l$ etc.

Jul 3, 2016

When we say "chlorine wants to gain one electron", we speak of the radical atom.

Chlorine as a free radical, $\text{Cl} \cdot$, is the chlorine atom that we say has 7 valence electrons and wants its 8th to form an octet.

Chlorine as an anion, ${\text{Cl}}^{-}$, has already gained its 8th valence electron and has an argon-like electron configuration:

$1 {s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{6}$

So, $\text{Cl} \cdot$, chlorine radical, is less stable, and ${\text{Cl}}^{-}$, chlorine ion, is more stable.