Atoms- electron configuration

Question 1

How do atoms become stable?

Answer 1

by having a full outer shell

Question 2

what do all the atoms in group 1 have in common?

Answer 2

yhey all have one electron on their outer shell

Question 3

Is it easier for lithium (small atom) or rubidium (big atom) to loose an electron?

Answer 3

rubidium because its last electron is further away from the nucleus

Question 4

What do the atoms in group seven all have in common?

Answer 4

They are all missing one electron to have a full outer shell