Question

an element X belongs to the 3 rd period and group 2 of the periodic table.State the no. of valency electrons amd its valency​

Answer 1

Answer:

no of valence electrons= 2

Valency is also 2

Answer 2

Answer:

(b) Since the number of valence electrons and the valency of group 2 elements is 2, the valency of element X is 2. (c) Group 2 is on the left side of the periodic table which consists of metals. Therefore X is a metal. (d) The name of the element is Magnesium (Mg), since X belongs to group 2 and the 3rd periods

Explanation:

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