Which of the following is non-polar but contains polar bonds?

Options

A. HCl
B. `CO_(2)`
C. `NH_(3)`
D. `NO_(2)`

Explanation

To determine which molecule is non-polar but contains polar bonds, we can analyze the molecular geometry and the polarity of the bonds in various compounds. Let's break down the solution step by step.

### Step 1: Understand Polar and Non-Polar Bonds
- **Polar Bonds**: A bond between two atoms where there is a significant difference in electronegativity, resulting in a dipole moment.
- **Non-Polar Molecule**: A molecule that has an overall zero dipole moment, meaning that the polarities of the bonds cancel each other out.

### Step 2: Analyze the Given Options
- We need to look for a molecule that has polar bonds but is non-polar overall.

### Step 3: Examine Carbon Dioxide (CO2)
- **Structure**: CO2 is a linear molecule.
- **Electronegativity**: The electronegativity difference between carbon and oxygen is significant, making the C=O bonds polar.
- **Molecular Geometry**: The linear shape means that the dipoles from the two C=O bonds point in opposite directions and cancel each other out.
- **Conclusion**: CO2 has polar bonds but is a non-polar molecule.

### Step 4: Compare with Other Molecules
- **NH3 (Ammonia)**: This molecule has a pyramidal shape due to the lone pair on nitrogen, resulting in a net dipole moment. Thus, it is polar.
- **NO2 (Nitrogen Dioxide)**: NO2 has a bent shape and also exhibits a net dipole moment, making it polar.
- **Conclusion**: Both NH3 and NO2 are polar molecules.

### Final Conclusion
- The only molecule from the options that is non-polar but contains polar bonds is **CO2**.