Question

How do you use the periodic table to determine the number of valence electrons?

Answer 1

The rows identify the electrons from 1 - 8. You must ignore transition metals for this to work.

Explanation:

The rows identify the electrons from 1 - 8. You must ignore transition metals for this to work.

Additionally, you can use the column (again, ignoring transition metals) to find the number of orbits in Bohr-Rutherford diagram.

Hope this helps :)