Can anybody here please explain to me about the spin of an electron in the covalent bond? My textbook just says that it follows the Hund’s rule. Moreover I am confused with one more statement in the text – it says that in a covalent bond, in the bonding molecular orbital the electrons tend to be nearer to the more electronegative atom is acceptable as well as trivial, but not so is the next statement that on the other hand in anti-bonding orbital the electrons tends to be more nearer to the less electronegative atom. I just want a detailed explanation on the following things. I had thought till now that I know exactly what anti-bonding is but the above statement has fully confused me. Please explain.