Nitrogen does not form pentahlides as it does not have ………….

Answer

To answer the question "Nitrogen does not form pentahalides as it does not have ………….," we can follow these steps:

### Step 1: Understand the Concept of Pentahalides
Pentahalides are compounds formed when an element bonds with five halogen atoms. For nitrogen, this would mean forming compounds like NCl5 or NF5.

**Hint:** Pentahalides are formed when an element can bond with five halogen atoms.

### Step 2: Determine Nitrogen's Electron Configuration
The electron configuration of nitrogen (atomic number 7) is 1s² 2s² 2p³. This configuration shows that nitrogen has a total of five valence electrons.

**Hint:** Look at the electron configuration to understand how many valence electrons an element has.

### Step 3: Identify the Role of D Orbitals
D orbitals are crucial for elements that can expand their valence shell to accommodate more than four bonds. In the case of nitrogen, it lacks any d orbitals in its electron configuration.

**Hint:** D orbitals allow elements to expand their valence shell, which is necessary for forming compounds with more than four bonds.

### Step 4: Conclude Why Nitrogen Cannot Form Pentahalides
Since nitrogen does not have d orbitals, it cannot expand its valence shell beyond the typical three bonds (as seen in compounds like NH3). Therefore, it cannot form pentahalides.

**Hint:** The absence of d orbitals in nitrogen prevents it from forming compounds with five halogen atoms.

### Final Answer
Nitrogen does not form pentahalides as it does not have d orbitals.