1.

An element X belongs to 3rd period and group 2 of the periodic table. State : (a) number of valence electrons (b) valency (c) metal or non-metal (d) name of the element

Answer»

An element X belongs to 3rd period and group 2 of the periodic table. State :

(a) number of valence electrons (b) valency (c) metal or non-metal (d) name of the element



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