1.

Two elements X and Y contain only one electron in the outer level.Element X is reactive and loses electron easily while element Y is relatively unreactive and non corrosive. The elements X and Y respectively are (a)Cs and Cu (b)Li and Cu

Answer»

Two elements X and Y contain only one electron in the outer level.Element X is reactive and loses electron easily while element Y is relatively unreactive and non corrosive. The elements X and Y respectively are

(a)Cs and Cu

(b)Li and Cu



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