Protons plus the neutrons
Sulfur has 16 protons and electrons; the number of neutrons is specific for each isotope: Number of neutrons in a sulfur isotope = Mass number - 16
Calcium has 20 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in a calcium atom = Mass number - 20
Protons and neutrons are the subatomic particles that have mass and are included in the calculation of the atomic mass number. Electrons have very low mass compared to protons and neutrons and are usually not included in the atomic mass calculation as they contribute very little to the overall mass of an atom.
The only non-radioactive isotope with the specified properties is silicon-28, which constitutes more than 90 % of naturally occuring silicon.
Silicon has 14 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in a silicon isotope = Mass number - 14
Two particles are considered. they are protons and nrutrons
The number of protons as well as the number of electrons.
Atomic number is same as the number of protons and number of electrons.
The mass number is the sum of protons and neutrons in the atomic nucleus.
Because the protons keep their integrity/identity whilst the electrons act as 'glue' binding all the subatomic particles together.
The two subatomic particles you add together to get the mass number of an atom are protons and neutrons. Protons have a positive charge, while neutrons have no charge, but together they contribute to the mass of an atom.
If you use 24He notation then the bottom number in the number of protons and electrons and the top number minus the bottom number is the number of neutrons
24
No, from 80 years.
Number of protons in the nucleus is the atomic number.
The total number of subatomic particles in the nucleus
No, sodium is not a subatomic particle. Sodium is a chemical element with the symbol Na and atomic number 11. Subatomic particles are particles smaller than an atom, such as protons, neutrons, and electrons.