An element X has a mass number 4 and atomic number 2. Write the valenc – InterviewSolution

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1.	An element X has a mass number 4 and atomic number 2. Write the valency of this element.
Answer» SOLUTION :The element X with MASS number 4 and atomic number 2 is HELIUM (He) .Ity has 2 electrons (maximum possible) in its only shell which is k shell .Therefore , the valency of the element is ZERO.

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