Question

Who decided electrons are negative?

Answer 1

1. Atom is made up of three subatomic particles that are electrons, protons and neutrons.
2. Electrons have negative charge whereas protons have positive charge.
3. Neutrons have no charge.
4. In the 18th century, Benjamin Franklin was the first person who said that electrons are negative and protons are positive.
5. The charge of one electron is $-1.602\times {10}^{-19}\mathrm{C}$ which is an equal and opposite charge of the proton.
6. The mass of electrons is $1/2000$ times lesser than the mass of protons and neutrons.
7. Mass of electron is $9.1\times {10}^{-31}\mathrm{Kg}$.
8. Electrons are continuously moving around the nucleus in their orbit.
9. Electrons have dual nature that is a particle as well as wave nature.