Question

Write down the formula of the compound resulting from the combination of an element x of atomic no 20 with an element y of atomic no 17.

Answer 1

Answer:

X=Ca (Atomic no:20) ; Y=Cl(Atomic no: 17)

∴ X+ Y 2 →XY2

ie,Ca + Cl2 →CaCl2

Answer 2

Answer:

Explanation:

X= Calcium (atomic no.20)

Y=Chlorine(atomic no. 17)

X+Y --- XY

Ca^2+Cl^-1= CaCl2

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