Which of the following is incorrect about cyanogen gas?

Options

A. It has bent structure
B. It is psuedohalogen
C. Its behavior is similar to halides.
D. both carbon are sp hybridised

Explanation

To determine which statement about cyanogen gas is incorrect, we first need to understand the properties and structure of cyanogen gas.

### Step-by-Step Solution:

1. **Identify the Chemical Formula**:
Cyanogen gas has the chemical formula \( C_2N_2 \) or can be represented as \( (CN)_2 \).

**Hint**: Remember that cyanogen consists of two carbon atoms and two nitrogen atoms.

2. **Understand the Structure**:
The structure of cyanogen can be represented as \( N \equiv C - C \equiv N \), where each carbon atom is triple bonded to a nitrogen atom and single bonded to the other carbon atom.

**Hint**: Visualize the triple bonds between carbon and nitrogen to understand the linear arrangement.

3. **Hybridization**:
Both carbon atoms in cyanogen are sp hybridized, which results in a linear shape for the molecule.

**Hint**: Recall that sp hybridization leads to a linear geometry due to the arrangement of electron pairs.

4. **Shape of the Molecule**:
Since the molecule is linear due to sp hybridization, any statement claiming that cyanogen has a bent shape is incorrect.

**Hint**: Compare the geometry of linear molecules with bent molecules to see the difference.

5. **Pseudohalide Behavior**:
Cyanogen behaves like a pseudohalide because it can form compounds similar to halides. This means it exhibits properties akin to halogens.

**Hint**: Think about how pseudohalides mimic the behavior of halogens in chemical reactions.

6. **Check the Statements**:
- If one of the options states that cyanogen has a bent shape, that would be the incorrect statement.
- Other statements regarding its behavior as a pseudohalide or its hybridization being sp are correct.

**Hint**: Review each option carefully to identify the one that contradicts the established facts about cyanogen.

### Conclusion:
The incorrect statement about cyanogen gas is that it has a bent shape. The correct shape is linear due to the sp hybridization of the carbon atoms.