Question

Nonmetallic elements form ions by valence electrons to complete their outer shell. The 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 as you go from top to bottom.

Answer 1

Explanation:

1. From left to right:-

the electronegativity increases , therefore reactivity in non- metal increases , except for the inert gases.

2. From top to bottom :-

electronegativity decreases , therefore reactivity in non- metal decreases .

Note:- the noble gases/ inert gases are a special group because of their lack of reactivity.

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