How is ice-cream melting a physical change?
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The third option. The angular quantum number (
) can be any integer between 0 and 
. Therefore, for the third option, can be 0, 1, 2, 3, or 4—but not 5.
Answer : The chemical formula for the compound is,
Explanation :
When the element 'M' react with the to give
.
The balanced chemical reaction is,
In this reaction, 'M' is in mono-atomic form and is in diatomic form.
By the stoichiometry,
2 moles 'M' react with the 1 mole of to give 2 moles of
.
Therefore, the chemical formula of the compound is,