Valence Bond Theory was developed in the year?

Options

A. 1916
B. 1927
C. 1930
D. 1932

Answer

**Step-by-Step Solution:**

1. **Identify the Theory**: The question asks about the development year of the Valence Bond Theory.

2. **Research the History**: Valence Bond Theory was introduced by scientists Walter Heitler and Fritz London.

3. **Determine the Year of Development**: The theory was developed in the year 1927.

4. **Understand the Concept**: Valence Bond Theory is based on the concept of atomic orbitals and the overlapping of these orbitals, which leads to the formation of chemical bonds.

5. **Example for Clarity**: For instance, in the case of hydrogen (H2), each hydrogen atom has an electronic configuration of 1s¹. When two hydrogen atoms come together, their 1s orbitals overlap, forming a chemical bond.

6. **Final Answer**: Therefore, the Valence Bond Theory was developed in the year **1927**.

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