Answer Happy

Which of the following statements is/are true of the valence bond theory? 1. The valence bond theory is an approximate theory to explain the electron pair or covalent bond by quantum mechanics. 2. According to the valence bond theory, an orbital on one atom occupies a portion of the same region of space as an orbital on another atom. 3. According to the valence bond theory, the sum of electrons in both orbitals of the bonding atoms should not be more than 4. Select one: a. I only b. 2 only c. 3 only 1 and 3 d. e. 1 and 2