How is an atom\'s atomic mass number determined? 1-The atomic mass number is det
ID: 1269746 • Letter: H
Question
How is an atom's atomic mass number determined?
1-The atomic mass number is determined only by the number of nucleons in the nucleus.
2-The atomic mass number is determined only by the number of neutrons in the nucleus.
3-The atomic mass number is determined only by the number of alpha particles emitted.
4-The atomic mass number is determined only by the number of beta particles emitted.
5-The atomic mass number is determined only by the number of protons in the nucleus.
6-The atomic mass number is determined only by the number of electrons in the atom.
which one is right ?
Explanation / Answer
The Atomic Mass Number which is represented by the symbol A is equal to the sum of number of protons and neutrons in the nucleus of an atom. Protons and neutrons are together called the neucleons.So, the correct answer is
1) The atomic mass number is determined only by the number of nucleons in the nucleus.