It's the number of molecules in a mole of that substance.Eg. 6.02*1023 molecules of Oxygen = 1 mole of Oxygen
Yes
Avogadro number refers to the number of molecules in 12 gram of C-12. Number of molecules clearly implies that Avogadro no. is natural number.
the mass number of an atom is the number of protons in an atom, plus the number of neutrons.
The Number Of Atoms (or molecules) In A Mole of a Substance. Equal to 6.02214179 × 1023 per mole.
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