Question

How many valence electrons does the element plutonium have?

Answer 1

`2`

Explanation:

Plutonium's electron configuration is a weird one, where it is:

`[Rn]5f^6\7s^2`

Source:

http://www.rsc.org/periodic-table/element/94/plutonium

Its outermost shell is therefore its `7s` shell, which contains `2` electrons, and therefore it has `2` valence electrons.