Bohr-Rutherford
Bohr-Rutherford
I think you're referring to JJ Thomson's model. It is more oftenly called the 'plum-pudding model'.
An electron cloud is made up of protons and neutrons.
The charge of an electron cloud is negative. The electron cloud is made up of electrons, and the electrons are negatively charged. The electron cloud will have a negative charge as well.
The electron cloud or electron shell
It is made up of electrons !!
Electron cloud
the scientist who came up with these theories are unknown
Who's Thompson?
As microscopes improved, so did the understanding of the human body. But the real breakthrough came from the creation of the electron microscope in 1931. The electron microscope was capable of creating magnifications of up to 2,000,000x.
1996
The atom is made up of a nucleus and an electron cloud. The nucleus contain protons (positive particles, p+) and neutrons (particles of no charge, n0). The electron cloud is made up of orbiting electron which possess a negative charge (e-).