200k views
4 votes
3. What does Letter X and Y represent?

3. What does Letter X and Y represent?-example-1
User Mandoleen
by
7.4k points

1 Answer

4 votes
y means families and are vertical (alkaline, alkaline earthmetals, halogens, transition metals, noble gases, etc)
x means periods andare horizontal (1,2,3,4,5)
User Igor Peshansky
by
6.6k points