neutrons
The mass number of an atom is the total number of protons and neutrons in its nucleus. It helps determine the atom's atomic mass by contributing to the overall mass of the atom. Changes in the mass number, such as through nuclear reactions, can result in different isotopes of an element.
Number of proton = atom numberfor example:Hydrogen has 1 proton and its atom number is also 1Number of neutrons + number of protons = mass numberfor example:Hydrogen have 1 proton and and NO neutrons, so the mass number is 1Helium has 2 protons and and 2 neutrons, so the mass number is 4
No, the element remains the same even when the atomic mass changes. Atomic mass is determined by the number of protons and neutrons in the nucleus of an atom, but changing the number of neutrons does not change the identity of the element.
You can't change the mass number of an atom because the mass number is the number of protons which is the atom's atomic number I hope this helped :)
Mass number!:)
The mass number is used to calculate the number of nucleons in an atom. It represents the sum of protons and neutrons in the nucleus of an atom. By knowing the mass number, one can determine the approximate atomic mass of the atom.
Atomic number is the number of protons in the atom; atom mass is the total mass of the atom (usually neglecting the mass of the electrons because they have so little).
The number of neutrons in an atom can affect the atomic mass of an atom.
the mass number is number of protons in an atom, plus the number of neutrons.
If the number of neutrons in an atom's nucleus were altered, it could lead to changes in the stability of the atom, potentially causing it to become radioactive or undergo nuclear reactions. This could affect the atom's properties, such as its mass, stability, and reactivity.
The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.
The mass number of an atom of argon is 40. This number represents the total number of protons and neutrons in the nucleus of the argon atom.