The group in the periodic table that contains the elements in all the different physical states at room temperature is

Options

A. `VA`
B. `IA`
C. `VIIA`
D. `IVA`

Answer

To determine which group in the periodic table contains elements in all three physical states (solid, liquid, and gas) at room temperature, we can analyze each group provided in the options.

### Step-by-Step Solution:

1. **Identify the Groups**: We have four groups to consider:
- Group 5A (Nitrogen family)
- Group 1A (Alkali metals)
- Group 7A (Halogens)
- Group 4A (Carbon family)

2. **Analyze Group 5A (Nitrogen Family)**:
- Members: Nitrogen (N), Phosphorus (P), Arsenic (As), Antimony (Sb), Bismuth (Bi).
- Physical States:
- Nitrogen is a gas.
- Phosphorus is a solid.
- Arsenic, Antimony, and Bismuth are also solids.
- Conclusion: This group does not have a liquid at room temperature.

3. **Analyze Group 1A (Alkali Metals)**:
- Members: Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), Francium (Fr).
- Physical States: All these elements are solids at room temperature.
- Conclusion: This group does not contain elements in all three states.

4. **Analyze Group 7A (Halogens)**:
- Members: Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I).
- Physical States:
- Fluorine and Chlorine are gases.
- Bromine is a liquid.
- Iodine is a solid.
- Conclusion: This group contains elements in all three states (gas, liquid, solid).

5. **Analyze Group 4A (Carbon Family)**:
- Members: Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), Lead (Pb).
- Physical States: All these elements are solids at room temperature.
- Conclusion: This group does not contain elements in all three states.

6. **Final Conclusion**: The only group that contains elements in all three physical states (solid, liquid, gas) at room temperature is **Group 7A (Halogens)**.

### Answer:
The correct answer is **Group 7A (Halogens)**.