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SavoryBytes · Answer 1 · 2021-04-24T16:59:10+0000

Atomic weight of metal : 24

Further explanation

Proust states the Comparative Law that compounds are formed from elements with the same Mass Comparison so that compounds have a fixed composition of elements

Divalent metal oxide=XO

MW O = 16

MW XO₂ = X+16

$\tt \%mass=(Ar~X)/(X+16)* 100\%\\\\0.6=(X)/(X+16)\\\\0.6(X+16)=X\\\\0.6X+9.6=X\\\\0.4X=9.6\rightarrow X=24$

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Further explanation

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