The number `sigma-` bond in `H_(2)` molecule is -

Options

A. 2
B. 3
C. 1
D. 4

Answer

To determine the number of sigma bonds in an H₂ molecule, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Sigma Bonds**: A sigma bond is formed by the head-on overlap of atomic orbitals. In the case of hydrogen (H), each hydrogen atom has one electron in its 1s orbital.

2. **Identifying the Atoms in H₂**: The H₂ molecule consists of two hydrogen atoms.

3. **Orbital Overlap**: When two hydrogen atoms come together, their 1s orbitals overlap. This overlap is head-on, which is characteristic of sigma bonds.

4. **Counting Sigma Bonds**: Since there is one overlap between the two 1s orbitals of the hydrogen atoms, there is one sigma bond formed in the H₂ molecule.

5. **Conclusion**: Therefore, the number of sigma bonds in the H₂ molecule is **1**.

### Final Answer:
The number of sigma bonds in the H₂ molecule is **1**.

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