How are the families of the periodic table organized?

(Select all that apply.)

based on the group of the elements

based on the period of the elements

by the class of the elements, such as metal or nonmetal

by the properties the elements share, such as reactivity

2 answers

I think the answer is D?
Two points Amy.
1. Yes, we HELP people but we don't do your work for you.This is clearly a homework dump. If you will tell us exactly what is troubling you about a problem we can HELP you get through it. As I answered the Mg(ClO3)2 problem above because both answers were wrong and I didn't want to let that stand.
2. I don't like any of the choices for the answer but I think D is the best of those choices listed.
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