Gram molecular mass of ammonia $({NH}_{3})$ is 17 g. Is it correct to regard it as formula unit mass also?

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Solution

Gram molecular mass is defined as the mass of one mole of the compound equal in grams to the molecular weight.
Formula unit mass is defined as the sum of atomic masses of all atoms in an ionic compound.
So in ammonia, it is not correct. ammonia exists in molecular form and is not an ionic compound made up of cations and anions. Therefore, it cannot have a formula unit mass. It has only molecular mass.

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Gram molecular mass of ammonia (NH3) is 17 g. Is it correct to regard it as formula unit mass also?

Gram molecular mass of ammonia $({NH}_{3})$ is 17 g. Is it correct to regard it as formula unit mass also?