Ions and Isotopes- year 9 chemistry

what is an ion?

A charged atom

what will an atom do to become stable?

Lose or gain electrons to become stable

what happens if an atom loses electrons?

It becomes positively charged

what happens if an ion gains electrons?

It becomes negatively charged

what does the number indicate

how many electrons are involved 

group 1 elements

+1 charge

group 2 elements

+2

group 3 elements

+3 charge

group 5 charge

-3 charge

group 6 charge?

-2 charge

group 7 charge?

-1 charge

isotopes meaning

an atom of the same element with the same number of protons and electrons but a different amount of neutrons