Chemistry · CHEMICAL BONDING AND MOLECULAR STRUCTURE

Given below are two statements: Statement I: Valence bond theory was originally introduced by Heitler and London in 1927 and later developed by Pauling and others. Statement II: Valence bond theory explains that bond formation is always an endothermic process requiring energy input from surroundings. In the light of the above statements, choose the most appropriate answer from the options given below:

1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct.