Question

the define parts in which the electron of an atom move​

Answer 1

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When bound in a stable state in an atom, the electron wavefunction spreads out into a certain shape called an "orbital". ... Rather, the orbital is the electron. When bound in a stable state in an atom, an electron behaves mostly like an oscillating three-dimensional wave, i.e. the orbital vibrates.

■■ Unlike protons, electrons can move from atom to atom. If an atom has an equal number of protons and electrons, its net charge is 0. If it gains an extra electron, it becomes negatively charged and is known as an anion. If it loses an electron, it becomes positively charged and is known as a cation.