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Which of the following elements would lose an electron easily? [NCERT Exemplar] (a) Mg (b) Na (c) K (d) Ca

Which of the following elements would lose an electron easily? [NCERT Exemplar]
(a) Mg
(b) Na
(c) K
(d) Ca

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 6228 Points
2 months ago
(c) Electronic configuration of Mg (atomic number = 12) 2, 8, 2 Electronic configuration of Na (atomic number = 11)2, 8, 1 Electronic configuration of K (atomic number=19) 2, 8, 8, 1 Electronic configuration of Ca (atomic number =20) 2, 8, 8, 2 From the above electronic configurations, it is clear that K and Na will lose electron easily to achieve stable configuration. But out of K and Na, K will lose electron more easily because the force of, attraction on valence electron of K is least among the given elements.

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