We understand that the electron is the particle that is found in what is called the electron cloud around the nucleus of an atom.
nucleus
The electrons occupy the electron cloud. It is not a cloud at all; it is simply a region where electrons are most likely to be found.
Electrons
The space around the nucleus of an atom is called the electron cloud. The electron cloud is the space in which the electrons of that atom travel. Compared to the nucleus, the electron cloud is enormous.
Its bunch of negatively charge electrons in particle-wave duality
An electron cloud is a visual representation of the space where an electron is likely to be found in an atom, based on quantum mechanics. It is not a physical cloud but a probability distribution. The term "shell" is often used to describe the energy levels where electrons are located around the nucleus of an atom.
The space occupied by the electrons in an atom is called the electron cloud.
Its bunch of negatively charge electrons in particle-wave duality
J.J. Thompson created the "Plum Pudding" model of the atom. He was inaccurate, though, in stating that the electrons are embedded in a positively charged particle cloud. Ernest Rutherford, then, using alpha particles, surmised that an atom is mostly empty space, and that the empty space contains electrons.
Electrons are the particles that surround the nucleus of an atom. They have a negative charge and occupy energy levels around the nucleus in an electron cloud.
The distribution of electron around an atom in various shells is sometimes referred to as electron cloud. If there are more electrons in certain space around the atom, that space is said to have a denser electron cloud.
electron cloud