Which of the following group of elements can lose an electron easily? (A) \( \mathrm{N}, \mathrm...

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Which of the following group of elements can lose an electron easily?
(A) \( \mathrm{N}, \mathrm{P}, \mathrm{As} \)
(B) \( \mathrm{O}, \mathrm{He}, \mathrm{Se} \)
(C) \( \mathrm{Li}, \mathrm{Na}, \mathrm{K} \)
(D) \( \mathrm{Cl}, \mathrm{Ba}, \mathrm{I} \)
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