define the atomic mass unit (answer according to class 9 syllabus)
Answers
Answered by
36
Answer:
An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon -12. The carbon -12 (C -12) atom has six protons and six neutrons in its nucleus. The AMU is used to express the relative masses of, and thereby differentiate between, various isotopes of elements.
Answered by
15
Answer:
the mass number also called atomic mass number or neutron
Similar questions