Science, asked by vinayakyadav32, 1 year ago

please give me answer of this question fast...

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Answered by Anishu1234

1

An element X has atomic number as 17 so it is chlorine and element Y has atomic number as 20 so it is calcium..

(a)X belongs to Group 17 and 3rd Period.

Y belongs to Group 2 and 4th Period.

(b)X+Y=XY

So, Cl+Ca=CaCl

thangaakilan112: CaCl2 is the compound as valency of calcium is 2

Anishu1234: Oh yes! Sry for the mistake...

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