Question

What is the disproportionation reaction of `MgCl`?

Answer 1

There is no disproportionation reaction.

Explanation:

Magnesium has only two oxidation numbers: 0 and +2.

Hence, there is no such compound as `"MgCl"`, in which `"Mg"` would have an oxidation number of +1.

Even if you meant `"MgCl"_2`, it still wouldn’t disproportionate.

In a disproportionation reaction, `"Mg(+2)"` could be reduced to `"Mg(0)"`, but it would also have to be oxidized to some higher oxidation number, and such a number does not exist.

Therefore, there is no disproportionation reaction.