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.

the answer is c.the valence of the atoms combine .

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.