Which of the following species contains 5 H atoms , `sp ^2 ` hybridised N atom and possesses planer structure ?

Options

A.
B.
C.
D.

Answer

To solve the question regarding which species contains 5 hydrogen atoms, has an sp² hybridized nitrogen atom, and possesses a planar structure, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Species**: We need to look at the given species and analyze their molecular formulas to determine the number of hydrogen atoms in each.

2. **Count Hydrogen Atoms**: For each species, count the number of hydrogen atoms:
- Species A: 5 H atoms
- Species B: 7 H atoms
- Species C: 6 H atoms
- Species D: 7 H atoms
- Species E: 5 H atoms

3. **Determine Hybridization of Nitrogen**: Next, we need to check the hybridization of the nitrogen atom in each species. The nitrogen atom is sp² hybridized if it is bonded to three other atoms (including hydrogen) and has one lone pair.
- Check the structure of each species to determine the hybridization of nitrogen.

4. **Check Planarity**: A molecule is planar if all its atoms lie in the same plane. This is often the case for sp² hybridized compounds due to the trigonal planar geometry.
- Evaluate the structures of the species to see if they are planar.

5. **Conclusion**: After analyzing each species:
- The only species that has 5 hydrogen atoms, an sp² hybridized nitrogen atom, and is planar is **Pyridine**.

### Final Answer:
The species that contains 5 hydrogen atoms, has an sp² hybridized nitrogen atom, and possesses a planar structure is **Pyridine**.

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