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How can we use patterns on the periodic table to predict an element’s structure and reactivity?
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How can we use patterns on the periodic table to predict an element’s structure and reactivity?

User Burgan
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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.

Step-by-step explanation:

User Mrt
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