What is the charge on an electron?

The charge on the electron is 1.6021 x 10^^-19 Coulombs

Electron

An electron is a negatively charged subatomic particle. It can be either free (not attached to any atom) or bound to an atom’s nucleus. The charge on a single electron is considered as the unit electrical charge. The mass of an electron at rest symbolized m_e, is approximately 9.11 x 10^-31 kilogram (kg).

• Electrons are found free in nature (free electrons) and bound within atoms.
• Electrons are responsible for the negatively charged component of an atom.
• Electrons are considered a type of elementary particle because they are not made up of smaller components.
• Electrons are attracted to positively charged particles, such as protons.

Refer for more details

1. Who Discovered the Electron
2. Write A Short Note On The Discovery Of Electrons