Select the correct answer. Which subatomic particle has negligible mass and travels around outside the nucleus? A. proton B. neutron C. electron D. orbital

Answer: The correct option here is electron that is option C

An atom is composed of subatomic particles that are positive, negative and neutral in charges and are called protons, electrons, and neutrons.

Explanation:

Subatomic particles present in an atom responsible for the mass, that atom carries is seen that the maximum weight is present inside the nucleus of an atom. And also the lightest weight among all the atomic particles is that of electrons.

C = electron

Explanation:

The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.

Symbol = e-

Mass = 9.10938356*10∧-31 Kg

It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.

While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.

Symbol of proton = P+

Symbol of neutron = n0

Mass of proton=1.672623*10∧-27 Kg

Mass of neutron=1.674929*10∧-27 Kg

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons.