Which of the following is non-polar

Options

A. `H_2S`
B. `NaCl`
C. `Cl_2`
D. `H_2SO_4`

Explanation

To determine which of the given compounds is non-polar, we will analyze each option based on their molecular structure and the electronegativity of the atoms involved.

### Step-by-step Solution:

1. **Analyze H2S (Hydrogen Sulfide)**:
- Sulfur (S) has 6 valence electrons and forms two bonds with hydrogen (H), using 2 of its electrons.
- The remaining 4 electrons form 2 lone pairs on sulfur.
- Sulfur is more electronegative than hydrogen, leading to a dipole moment where the electron density is pulled towards sulfur.
- **Conclusion**: H2S is polar due to the difference in electronegativity and the presence of a dipole moment.

2. **Analyze NaCl (Sodium Chloride)**:
- NaCl is an ionic compound formed from Na+ and Cl- ions.
- There is a complete transfer of electrons from sodium to chlorine, resulting in a strong charge separation.
- **Conclusion**: NaCl is polar due to the ionic nature and charge separation.

3. **Analyze Cl2 (Chlorine Gas)**:
- Cl2 consists of two chlorine atoms bonded together.
- Both atoms have the same electronegativity, leading to an equal sharing of electrons in the bond.
- There is no charge separation since both atoms are identical.
- **Conclusion**: Cl2 is non-polar as there is no dipole moment.

4. **Analyze H2SO4 (Sulfuric Acid)**:
- H2SO4 has a complex structure with sulfur bonded to oxygen and hydrogen.
- Oxygen is more electronegative than sulfur, leading to charge separation in the O-H and S=O bonds.
- This results in a dipole moment, indicating polarity.
- **Conclusion**: H2SO4 is polar due to the presence of charge separation and dipole moments.

### Final Answer:
The non-polar compound among the options provided is **Cl2**.