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Which does not form a Pentahalide?...

Which does not form a Pentahalide?

A

P

B

As

C

Sb

D

N

Text Solution

AI Generated Solution

The correct Answer is:
To determine which element does not form a pentahalide among phosphorus, arsenic, antimony, and nitrogen, we can analyze the ability of each element to expand its valence shell and form compounds with five halogen atoms. ### Step-by-Step Solution: 1. **Understanding Pentahalides**: - Pentahalides are compounds formed when an element bonds with five halogen atoms. 2. **Analyzing Each Element**: - **Phosphorus (P)**: - Phosphorus can form pentahalides such as phosphorus pentachloride (PCl5). This is possible because phosphorus can expand its octet to accommodate five bonds. - **Arsenic (As)**: - Arsenic can also form pentahalides like arsenic pentachloride (AsCl5). Similar to phosphorus, arsenic can expand its valence shell to form five bonds. - **Antimony (Sb)**: - Antimony is capable of forming pentahalides, for example, antimony pentachloride (SbCl5). It can also expand its octet. - **Nitrogen (N)**: - Nitrogen typically forms three bonds (as in ammonia, NH3) and can form a maximum of four bonds in compounds like NF3. However, it cannot form a pentahalide (NF5) because nitrogen lacks the ability to expand its valence shell beyond four due to the absence of vacant d orbitals. 3. **Conclusion**: - Among the given options, nitrogen does not form a pentahalide. Therefore, the answer is nitrogen. ### Final Answer: **Nitrogen does not form a pentahalide.** ---
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