Electronics - Voltage and Current - Discussion

An Atom is a stable particle made up of a Nucleus surrounded by Protons and Electrons. Both protons and electrons have equal but opposite charges.

The stability is due to the cancellation of forces of -ve charges of electrons with that of +ve charges of protons. The number of protons in a nucleus is called the atomic number and equals the number of electrons in orbit about that nucleus in a non-ionized atom. Elements are made up of Atoms.

So all atoms that have the same number of protons (the atomic number) are atoms of the same element.

Number of protons decides atomic number.

No of electron = No of proton = Atomic number.

Atomic number = No. of protons or electrons in an atom. So answer C is also correct.

Electron has negative charge. Proton has positive charge.

We always be positive. So proton is correct.

Since protons are never transferred they remains constant in an atom therefore B is correct.

If any atom in the participation of bond formation the no of electrons changes but protons does not change.

In every chemical reaction the no. of electron is vary i.e. increase or decrease, but the no. of proton remain same in every condition, thereby I decide that option (B) is correct.

For an atom electron and proton number is same for the stability of the particular atom. In the time of chemical reaction proton will be neutral and nonreactive but always the electron number varies. So to get a stabilized answer I will go with proton.

If we lost one or more electron in an atom structure due to bond formation or chemical reaction that is positively charged ion, here num of protons in that atom was not change. So num of proton > num of electron.

If we gained one or more electron in an atom structure due to bond formation or chemical reaction that is negatively charged ion, here num of protons in that atom was not change. So num of proton < num of electron.

In both cases num of neutron is changed, but num of protons remains constant.

That's why we said num of protons decide atomic number.