Question

18) Which of the following the most reducing
a) Mg
b) Na
(c) k
d) Br2​

Answer 1

Answer:

c) k

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Answer 2

Explanation:

Valency: Valency of an element is determined by the number of valence electrons present in the outermost shell of its atom.

Valency of elements in a particular group is same.

Valency of elements in a period first increases from one to four and then decreases to zero.