which of the following oxides shows electrical properties like metals ?

Options

A. `SiO_(2)`
B. MgO
C. `SO_(2)(s)`
D. `CrO_(2)`

Explanation

To determine which of the given oxides shows electrical properties similar to metals, we will analyze each option based on their chemical nature and conductivity.

### Step-by-Step Solution:

1. **Identify the Oxides**: The options provided are silicon dioxide (SiO2), magnesium oxide (MgO), sulfur dioxide (SO2), and chromium oxide (CrO3).

2. **Analyze Silicon Dioxide (SiO2)**:
- Silicon is a metalloid, and its oxide, SiO2, is a covalent network solid.
- It does not conduct electricity well because it lacks free-moving electrons.
- **Conclusion**: SiO2 does not exhibit metallic electrical properties.

3. **Analyze Magnesium Oxide (MgO)**:
- Magnesium is a metal, but MgO is an ionic compound.
- In solid form, MgO does not conduct electricity because the ions are fixed in place and cannot move freely.
- **Conclusion**: MgO does not exhibit metallic electrical properties.

4. **Analyze Sulfur Dioxide (SO2)**:
- Sulfur is a non-metal, and its oxide, SO2, is a molecular compound.
- SO2 does not have free electrons and does not conduct electricity.
- **Conclusion**: SO2 does not exhibit metallic electrical properties.

5. **Analyze Chromium Oxide (CrO3)**:
- Chromium is a metal, and its oxide, CrO3, can exhibit some metallic properties.
- Transition metal oxides, like chromium oxide, can have partially filled d-orbitals, allowing for some degree of electrical conductivity.
- **Conclusion**: CrO3 can exhibit electrical properties similar to metals.

6. **Final Conclusion**: Among the given options, chromium oxide (CrO3) is the only oxide that shows electrical properties like metals.

### Answer:
**Chromium Oxide (CrO3)** shows electrical properties similar to metals.

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