Question

Define atomicity.What is atomic mass unit?​

Answer 1

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The number of atoms constituting a molecule is known as its atomicity.

The sum of the atomic masses of all the atoms in a molecule of the substance is expressed.in atomic mass unit.

E.g., H20 = 1 x 2 + 16 = 18 amu

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Answer 2

Answer:

unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to ¹/₁₂ the mass of a single atom of the most abundant carbon isotope 12C. — called also dalton.