Question

which of the following represent 12u. a. mass of 1 hydrogen atom. b. mass of c-12 atom. c. mass of 0-10 atom. d. 1/12 th of mass c-12 atom​

Answer 1

Answer:

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Explanation:

One atomic mass unit is defined as one-twelfth of the mass of one carbon - 12 atom because C-12 is chosen as the standard atom. This is because it has the equal number of protons and neutrons (6) and constitutes most of the matter.

The most abundant isotope of carbon is Carbon - 12.

Thus both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.