Question

Atomic mass unit is
(A) mass unit equal to excatly 1/12 mass of one atom of C-12.
(B) formula unit equal to excatly 1/12 mass of one atom of C atom.
(C) mass unit equal to mass of one atom of C-12.
(D) None of these​

Answer 1

Answer:

A)

Explanation:

because it is exactly equal to 1/12th mass of one atom of carbon-12