A neutral element has \[3\] electrons, the Atomic number of the element is?

Hint: We know that we know that hydrogen is the first element of the periodic table. The atomic mass of an element in a periodic table is equal to the sum of the number of protons and the number of neutrons. Also, neutrons are dense as well as positively charged atoms.

Complete answer:
We know that atoms are the smallest unit of matter. An atom is made up of three subatomic particles: the proton, the neutron, and the electron. We should note that, nucleus is made up of protons and neutrons. Neutrons are dense and positively charged atoms. The negatively charged electrons can be found around the nucleus in an electron cloud. The number of protons found in the nucleus equals the number of electrons that surround it, which is also equal to the atomic number of the corresponding element in the periodic table.
Atomic Mass Number \[=\] Number of Protons in nucleus $+$ Number of Neutrons in nucleus. To solve this question, we should know about isotopes. The elements which have the same atomic number and different atomic mass is due to the different atomic mass is due to the different number of neutrons present in it. Atomic numbers or electrons or protons are equal in isotope.
Atomic number \[=\] Number of protons \[~=\] Number of electrons. So, the atomic number of the neutral element is \[3.\] The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.

Note:
Remember that do not get confused between isotopes, isobars and isotones. Isotopes have the same number of protons but their atomic masses are different. Isobars have the same atomic masses but the number of protons in their nucleus may differ. The atoms that have the same number of neutrons in the nucleus are called isotones.