[Boxxxed]

For a nonmetal in Group 15 (5A) of the periodic table, the most common monatomic ion will have a charge of ____.

a.3-
b.2-
c.1-
d.1+
e.2+

I'm pretty sure it will be a negative since elements on the right side of the periodic table have higher electronegativity. How do I figure out the charge?

[Schrödinger]

Hint : Now that you've figured out that the charge will be negative, how many electrons will the monoatomic atom have to accept in order to have an electronic configuration that resembles the nearest noble gas??

[Boxxxed]

-3?

What does the +3 charge of the group 15 elements mean specifically? Not sure I understand the background of this question.

[Schrödinger]

It means that the element has lost 3 electrons to another element (to an element that is more electronegative than itself)