The colour shown by halogen is incorrectly given by

Options

A. `F_(2)`=yellow
B. `Cl_(2)`=colourless
C. `Br_(2)`=Red
D. `I_(2)`=Violet

Answer

To solve the question regarding the incorrect color representation of halogens, we will analyze the colors of the halogen gases given in the options.

### Step-by-Step Solution:

1. **Identify the Halogens and Their Colors**:
- The halogens in question are fluorine (F2), chlorine (Cl2), bromine (Br2), and iodine (I2).
- The options provided are:
- F2: Yellow
- Cl2: Colorless
- Br2: Red
- I2: Violet

2. **Check the Correct Colors of Each Halogen**:
- **F2 (Fluorine)**: The color of fluorine gas is actually a pale yellow, so the description of F2 as yellow is correct.
- **Cl2 (Chlorine)**: Chlorine gas is not colorless; it is actually greenish-yellow. Therefore, the description of Cl2 as colorless is incorrect.
- **Br2 (Bromine)**: Bromine is typically described as red-brown. The description of Br2 as red is generally acceptable, though it can be more accurately described as red-brown.
- **I2 (Iodine)**: Iodine vapor is violet, which is correct.

3. **Determine the Incorrect Statement**:
- From the analysis, the only incorrect statement is regarding Cl2, which is stated to be colorless, while it is actually greenish-yellow.

4. **Conclusion**:
- The option that incorrectly describes the color of a halogen is **Cl2: Colorless**.

### Final Answer:
The color shown by halogen that is incorrectly given is **Cl2: Colorless**.

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