Question

How many valence electrons does cadmium have?

Answer 1

`2` valence electrons.

Explanation:

Here's cadmium on the periodic table:

Its electron configuration would be `[Kr] 5s^2 4d^10`.

So, as with most transition metals, it will have `2` valence electrons because the full `s` orbital, which has the highest principal quantum number, has `2` electrons.