How do the outer shell electron configurations for ions of group 1,group 2, and group 15 how did the outer shell electron configurations for ions of group 1 group 2 and group 15 group 16 and group 17 elements compared with those of the noble gases

Explanation: Outer shell electronic configuration for Group 18 is :

( have 8 electrons in the outer shell)

The electronic configurations for other groups are:

( have 1 electron in the outer shell}

( have 2 electrons in the outer shell)

( have 5 electrons in the outer shell)

( have 6 electrons in the outer shell)

( have 7 electrons in the outer shell)

Comparing the electron configurations of group 18 to other groups.

Group 18 has fully filled outer shell, that is 8 electrons in the outer shell, while others are partially filled.

that's what i got you can count the number of atoms