Question

What does the number of valence electrons an atom has have to do with whether the atom
will gain electrons or lose electrons?

Answer 1

Answer:

A valence number of 1 means that an alement will generally react to lose one electron to obtain a full outer shell.

Group two elements are assigned a valence number of 2. A valence number 2 means that a group two elements will generally react to lose two electrons to obtain a full outer shell.

Explanation:

Hope it helps