A main group element with the valence electron configuration 2s 1 is in periodic group _______. It forms a monatomic ion with a charge of ________.

A. A main group element with the valence electron configuration 2s1 is in periodic group _______.

It forms a monatomic ion with a charge of ________.

B. A main group element with the valence electron configuration 5s25p5 is in periodic group ______.

It forms a monatomic ion with a charge of ________.