For each atom in the table below, write down the subshell from which an electron would have to be removed to make a

+1

cation, and the subshell to which an electron would have to be added to make a

−1

anion.

The first row has been completed for you.

 

subshell from which electron removed to form subshell to which electron added to form -1 atom +1 anion cation 1s 1s K