Question

Elements that want to gain one outer electron?

-alkili metals
-transition metals
-halogens
-noble gases

Answer 1

Halogens

Step-by-step explanation:

Because elements that have positive and negative are usually called ions and the group 7 non metals gains 1 electron.

Answer 2

halogens

Step-by-step explanation:

Elements that are nonmetals tend to gain electrons and become negatively charged ions called anions