Question

Which are the particles whose numbers you can find out if you know the atomic number of an atom?

Answer 1

We know that In order to answer this question; try to proceed by defining an atom. Atoms of the same element having different numbers of neutrons are referred to as isotopes whereas atoms of different chemical elements have the same number of nucleons.

Complete answer:
An atom is the smallest unit of matter which is composed of three subatomic particles: the proton, the neutron, and the electron.=. So, protons and neutrons make up the nucleus of the atom, a dense and positively charged core whereas the electrons can be found around the nucleus. Protons are referred to as the positively charged particles present in the nucleus while electrons are the negatively charged particles that are present in the nucleus and neutrons are the neutrally charged particles present in the nucleus along with the protons. Then, describe the subatomic particles of which the tom is made. Atoms having the same number of electrons are referred to as isoelectronic atoms.
We know that the number of protons equals the number of electrons giving the atom a neutral charge. It essentially defines the element. While having a neutral charge, it also provides the number of electrons the element has (in one atom). While isotopes are a thing, it doesn't completely change the atom. The atomic number helps people identify elements according to the number of protons one atom of the element has. Therefore, the number of protons and electrons are the particles whose numbers we can find out if we know the atomic number of an atom.

Note:
Remember that the atomic number helps people identify elements according to the number of protons one atom of the element has. It essentially defines the element. While having a neutral charge, it also provides the number of electrons the element has. While isotopes are a thing, it doesn't completely change the atom.