Core 1 - The Periodic Table

Question 1

Elements in the same group on the periodic table have what?

Answer 1

Have the same number of electrons on their outer shell which gives them similar chemical properties

Question 2

Why are the noble gases in group 0 unreactive?

Answer 2

Their atoms have stable arrangements of their electrons

Question 3

Noble gases - group 0

Answer 3

All have eight electrons in their outer shell expect helium who only has 2