Question #f30e9

1 Answer
Nov 14, 2017

In order of increasing size meaning smallest to highest is Al + 3, Mg +2, Ca +2, Ca, K

Remember that size increases going down and to the left


To learn more of why it's in this order refer to the image below which shows how a positive charge makes the atom smaller this is because of the shielding effect and because of the effective nuclear charge which means that if an atom loses an electron then that means that the positively charged nucleus has a stronger pull on the electrons while if there were more electron or if it were negatively charged than the pull of the nucleus is distributed among more electrons therefore the atom would overall be bigger

Created By Elyas Ahmadzai