Question

Explain valence bond theory in brief​

Answer 1

Explanation:

According to this theory a covalent bond is formed between the two atoms by the overlap of half filled valence atomic orbitals of each atom containing one unpaired electron. ... Valence bond theory considers that the overlapping atomic orbitals of the participating atoms form a chemical bond.

Answer 2

Explanation:

Metal ligand bond arise by the domination of pairs of electrons by ligand to metal atom

the orbital of metal atom undergo hybridisation and form a set of hybrid orbitals of equal energy to accommodate the donation pairs of electrons by ligands , during this process , sometimes the unpaired (n-1)d electrons get paired up prior to bond formation and thus making some of (n_1)d orbitals available for hybridisation