Chemistry Question on Discovery of Sub-atomic Particles

Question

Which one of the following has unit positive charge and $1$ amu mass?

Answer 1

Solution

The correct answer is Proton.

Protons are positively charged particles with a mass of around one atomic mass unit. The number of protons in an atom is the same as the atomic number. A proton's charge is equal to and opposite to that of an electron just with an opposite sign.

The charge of a proton is +1.602 x 10-19 coulombs.

And its mass is 1amu = 1.677 x 10-27 kg.

Within the nucleus of a hydrogen atom are positively charged protons. An atom is made up of protons, electrons, and neutrons. The whole mass of an atom is contained in the nucleus, situated in the middle of the atom. Protons and neutrons, generally referred to as nucleons, make up the nucleus. Around the nucleus, electrons orbit in a circular pattern.

Electrons are negatively charged and neutrons are neutral.