Question

The electronic configuration of an element is given below.

1s22s22p63s1

Which statement about the reactivity of the element is true?

It is reactive because it has a full outermost energy level.
It is unreactive because it has a full outermost energy level.
It is reactive because it has to lose one electron to have a full outermost energy level.
It is unreactive because it has to gain one electron to have a full outermost energy level.