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lisov135 [29]
3 years ago
14

The reactivity of an element is based on its __________.

Physics
1 answer:
Goryan [66]3 years ago
7 0

Answer:

The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.

Explanation:

i think

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