Question

If the following elements were to form ions, they would attain the same number of electrons as which noble gas?

a. He
b. Ne
c. Ar
d. Kr

Answer 1

The elements that form anions will have the electronic configuration similar to the noble gas that is in their period and those that form cations will have a configuration similar to that of the noble gas in the previous period.
He: Be
Ne: F, Al
Ar: Ca, P
Kr: Rb, Se