Which of the following oxides shows electrical properties like metals ?

Options

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

Explanation

To determine which oxide shows electrical properties like metals, we will analyze each option provided:

### Step 1: Analyze SiO2 (Silicon Dioxide)
- SiO2 is a compound formed from silicon (Si) and oxygen (O). Silicon is a metalloid and does not exhibit metallic conductivity. SiO2 is an insulator and does not conduct electricity.

**Hint:** Consider the position of silicon in the periodic table and its properties.

### Step 2: Analyze SO2 (Sulfur Dioxide)
- SO2 is composed of sulfur (S) and oxygen (O). Sulfur is a non-metal and SO2 is a molecular compound that does not conduct electricity. Therefore, it does not exhibit metallic properties.

**Hint:** Look at the nature of sulfur and its compounds.

### Step 3: Analyze MgO (Magnesium Oxide)
- MgO consists of magnesium (Mg) and oxygen (O). Magnesium is an alkaline earth metal, and while MgO can conduct electricity when molten or in solution, it is primarily an ionic compound and does not exhibit metallic conductivity in its solid state.

**Hint:** Consider the ionic nature of MgO and how it behaves in different states.

### Step 4: Analyze CrO2 (Chromium Dioxide)
- CrO2 is formed from chromium (Cr) and oxygen (O). Chromium is a transition metal and CrO2 is known to exhibit metallic conductivity. It can conduct electricity due to the presence of delocalized electrons, a characteristic of metals.

**Hint:** Think about the properties of transition metals and their oxides.

### Conclusion
Based on the analysis:
- SiO2, SO2, and MgO do not exhibit metallic electrical properties.
- CrO2 is the only oxide among the options that shows electrical properties like metals.

**Final Answer:** The oxide that shows electrical properties like metals is **CrO2 (Chromium Dioxide)**.