How many valence electrons does an atom of Al possess?

1 Answer
reudhreghs
Apr 6, 2016

#3#

Explanation:

Aluminium is not a transition metal so acts in the normal way, with electrons filling up by #2# in the first shell and #8# in the shells afterwards.

The total number of electrons in an atom is the same as the atomic number, which is found on the periodic table: #13#.

If the first shell holds #2# in total, and the second shell holds #8#, that's #10# so far, which means there are #3# left in the last or valence shell.

Related questions
See all questions in Valence Electrons
Impact of this question
6934 views around the world
You can reuse this answer
Creative Commons License