The analogy that forms the basis of the octet rule compares covalent valence electron arrangements to orbital overlap electron densities.
What is orbital ?An atomic orbital is a function that describes the position and wave-like activity of an electron in an atom in terms of both atomic theory and quantum mechanics.
This function may be used to determine the likelihood of discovering any atom's electron in any certain area surrounding the nucleus.
The nucleus is the center of the orbits. One orbital will be larger than the others if an atom has several orbitals, or they will overlap. Additionally, an electron is most likely to be found in the orbitals.
An atomic Orbitals are centred around the nucleus. If an atom has many orbitals, either one orbital is bigger than the others or they overlap.
Thus, option B is correct.
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