Question

if Z=12,then what is the valency of the element?​

Answer 1

Answer:

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Answer 2

Answer:

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Atomic number (Z) = 12, so name of element is sodium (Na) & (Mg) with such configuration number. It can be found that Na and Mg Re the given elements. The valency of Sodium (Na) is +1 as it loses one electron to become a cation.

Explanation:

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