Biology, 23.08.2019 08:10, sa9334

The
nonmetallic elements form ions by
valence electrons to complete their outer shell.
valence electrons an element has in its outer shell, the easier it is to complete.
the
electron shells an element has, the easier it is to fill its outermost shell.
reactivity in nonmetals
as you go from left to right in a group, and
bottom.
as you go from top to
intro
done

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The
nonmetallic elements form ions by
valence electrons to complete their outer shell.