Question

Which compound can not demonstrate
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Answer 1

Answer:

To demonstrate this law, two/more compounds of common two elements are required. Hence, Na2S and NaF can't demonstrate law of multiple proportions...

Answer 2

$\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}⋆$

Na2S and NaF can't demonstrate law of multiple proportions.