Statement-I : $^{12} C$ has atomic mass of exactly 12 atomic mass unit (amu).
Statement-II : One amu is defined as a mass exactly equal to 1/12 of the mass of one carbon-12 atom.
Select the correct option :

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

Only statement-II is correct.

Statement-I and II both are incorrect.

Only statement-I is correct.

Both the Statement-I and II are correct.

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

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.