Question

Select correct statement about valence-bond approach

• A. Each bond is formed by maximum overlap for its maximum stability
• B. It represents localised electron model of bonding
• C. Most of the electrons retain the same orbital locations as in a separated atoms
• D. All the above are correct statements

Answer 1

Answer: (D)

All the above are correct statements

All the statement about valence-bond approach are correct.

(A) Each bond is formed by maximum overlap for its maximum stability. The strength of a covalent bond depends upon the extent of overlap of orbitals between the two atoms. Greater the extent of overlap between atomic orbitals, more is the energy released and stronger is the bond formed.

(B) It represents localized electron model of bonding. During overlap of atomic orbitals, the electron density increases in between the two nuclei.

(C) Most of the electrons retain the same orbital locations as in a separated atoms. Each atomic orbital (except-s-orbital) has a particular direction in the space. Hence, covalent bond formed by overlap of atomic orbitals possess directional characteristics.