Question

A certain particle carries $2.5\times {{10}^{-16}}C$ of static electric charge. Calculate the number of electrons present in it.

Answer 1

Hint: The negatively charged electrons, the positively charged protons, and the electrically neutral neutrons are subatomic particles. Protons and neutrons are themselves made up of elementary particles called quarks and only one member of an elementary particle includes the muon. Unusual subatomic particles such as the positron, the antimatter counterpart of the electron.

Complete step by step solution:
Subatomic particle electrons were identified and discovered by J.J.Thomson and E.goldstein. The subatomic particle which has a charge, equal in magnitude and the opposite sign is an electron identified in the gas discharged tube. Electrons contain no desirable structure which cannot be reduced or separated into smaller components; therefore these are named as elementary particles. Typically ${{10}^{-10}}$ meter across, almost all of the size of the atom is unoccupied by available space to point charge electrons surrounding the nucleus. The mass of an electron is about $\dfrac{1}{1836}$ times a proton. The mass of an electron is $9.10938356\times {{10}^{-23}}$ Kg and this mass of an electron is negligible compared to a proton. The negatively charged particle is an electron and the negative charge is equal to $1.602\times {{10}^{-19}}C$ in magnitude.
Given that the certain particle carries charge = $2.5\times {{10}^{-16}}C$
-Then the number of electrons present in the given certain charged particle = $\dfrac{2.5\times {{10}^{-16}}}{1.602\times {{10}^{-19}}}=1.56\times {{10}^{3}}$

Hence, the $1.56\times {{10}^{3}}$ electrons present in the charged particle.

Note: Protons and neutrons are located inside the nucleus at the center of the atom, but electrons are found outside of the nucleus. Due to opposite charges attract each other, these negative charged electrons are attached to the positive charged nucleus. The attraction between electrons and nucleus keeps the electrons moving around the nucleus.