Question

Electron is Represented As:

Answer 1

Hint: An atom is a basic constituent of matter. It is made up of Electrically charged particles like protons, electrons, and neutral neutrons. The atom contains a small sized nucleus which occupies very less space of the atom. The nucleus consists of positively charged protons and neutral species neutrons. The nucleus is surrounded by negatively charged electrons.

Complete answer:
To answer the question, we need to know the electron and its properties.
Some important points to remember regarding electrons are as under-
1.Electron was first discovered by J.J Thomson in 1897 by the Cathode Ray Tube (CRT) Experiment. He is known as the Father of electrons.
2.Electrons are negatively charged particles.
3.The charge on an electron is $ - 1.6 \times {10^{ - 19}}C$ or we can approximately have a $ - 1$ charge. The charge of an electron was measured by R. Millikan in the oil drop Experiment.
4.Electrons display both particle as well as wave properties.
5.They revolve around the nucleus in various specific well defined energy levels.
6.Electron is approximately 2000 times lighter than hydrogen (Approximately negligible mass). Electron has a mass of $9.1 \times {10^{ - 28}}g$
7. The charge to mass ratio of electrons is $ - 1.76 \times {10^8}C/g$.
8.When energy is provided electrons can be excited to higher energy levels and this process is called Absorption. When electrons move from higher to lower energy levels energy is released and a process is called emission.
9.The 3 inherent properties of electrons are Mass, Charge and spin.
10.Electron spin is a result of movement of electrons on its own axis.
11.The position and momentum of an electron cannot be determined simultaneously as per principle of quantum mechanics.
Thus keeping in mind all these points we can say that an electron is represented as- $_{ - 1}{e^0}$ because it has approximately zero mass and charge is $ - 1$.

Note:
A neutral atom has an equal number of electrons and protons but when there is either gain or loss of electrons in an atom it forms ions. A cation contains fewer electrons than the protons while An anion contains more electrons than protons. The size of cation is less than a neutral atom while that of anion is more.