Pick out the wrong statement.

Options

A. Nitrogen has the ability to form `p pi-p pi` bonds with itself
B. Bismuth forms metallic bonds in elemental state
C. Catenation tendency is higher in nitrogen when compared with other elements of the same group.
D. Nitrogen has higher first ionisation enthalpy when compared with other elements of the same group.

Answer

To solve the question of identifying the wrong statement regarding nitrogen and its properties, we will analyze each statement provided in the video transcript step by step.

### Step-by-Step Solution:

1. **Statement Analysis:**
- **Statement 1:** "Nitrogen has the ability to form P pi P pi bond with itself."
- **Evaluation:** This statement is true. Nitrogen can form a triple bond (one sigma and two pi bonds) with itself due to the presence of p orbitals.

2. **Statement 2:** "Nitrogen belongs to the second period in group 15."
- **Evaluation:** This statement is also true. Nitrogen is indeed located in the second period and is part of group 15 in the periodic table.

3. **Statement 3:** "Bismuth forms metallic bonds in elemental states."
- **Evaluation:** This statement is true. Bismuth, being a metal, does form metallic bonds in its elemental state.

4. **Statement 4:** "The catenation tendency is higher in nitrogen when compared with other elements of the same group."
- **Evaluation:** This statement is false. Catenation refers to the ability of an element to form chains with itself. While nitrogen can form N-N bonds, these bonds are weaker due to inter-electronic repulsion, making nitrogen's catenation ability lower than that of phosphorus, which can form strong P-P bonds and larger structures like P4.

5. **Statement 5:** "The first ionization energy of nitrogen is higher compared to other elements."
- **Evaluation:** This statement is true. Nitrogen has a higher first ionization energy than other elements in group 15 due to its smaller atomic size and higher effective nuclear charge.

### Conclusion:
The wrong statement is **Statement 4**: "The catenation tendency is higher in nitrogen when compared with other elements of the same group."