Question

atomic mass as expressed​

Answer 1

Answer:

Atomic mass can be expressed in grams. However, because each atom has a very small mass, this is not very helpful. Instead, atomic mass is expressed in unified atomic mass units (unit symbol: u). 1 atomic mass unit is defined as 1/12 of the mass of a single carbon-12 atom.

Explanation:

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Answer 2

Answer:

u (unified mass)

Explanation:

Before, atomic mass was expressed as amu (atomic mass unit). But according to the IUPAC's (International Union of Pure and Applied Chemistry) latest recommendations, it is now only u (unified mass)

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