Question

What is meant by 1 amu or 1 u ?​

Answer 1

Explanation:

1 amu or 1u is the mass of an atom calculated by the means of C-12 atom . It's formula is

$1u \: = \: \frac{1}{12} mass \: of \: c \: - 12 \: toms$

Answer 2

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1 amu(atomic mass unit) or 1u(unified mass) is equal to mass of one-twelfth mass of carbon-12 atom.

1 amu = 1/12 mass of C-12 isotope