What is the positive ion of calcium and nitrogen

Calcium, which is in Period 2 and has 2 valence electrons, has an ion of Ca 2+

This is because it can give up the two electrons to get a full outer shell.

Nitrogen, on the other hand, has 5 valence electrons. To get a full outer shell, it can either gain 3 electrons or lose 5. Since it is easier to gain 3, Nitrogen usually gains 3 electrons to form a N3- ion.

Even though it is rare, it is possible for Nitrogen to form a positive ion, which is N5+

Hope I helped!! xx

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts