electronic configurations

Question 1

how do you workout the electronic configuration?

Answer 1

• if the electron is in the first shell it has 2 electrons.
• if it has 2 or 3 shells it has 8 electrons on it

Question 2

state another you can workout the electronic configuration of an atom?

Answer 2

• you can also work it out by the period because the number of shells = to the number of period
• the group number tells you how many electrons there are in the outer shell (last shell)