One atomic mass unit (amu) is a mass unit equal to exactly one-twelfth the mass of a August 16, 2025August 16, 2025 Farhan Shoukat Chemistry, css, Everyday Science, Full List, SCIENCE MCQS (A) carbon-8 atom(B) carbon-12 atom(C) carbon-16 atom(D) carbon-20 atom The answer is: (B) carbon-12 atom Related