Which has the same electronic configuration as of inert gas ?

Options

A. `Ag^(3+)`
B. `Cu^(2+)`
C. `Pb^(4+)`
D. `Ti^(4+)`

Explanation

To determine which of the given ions has the same electronic configuration as an inert gas, we need to analyze the electronic configurations of each option provided.

### Step-by-Step Solution:

1. **Identify the Ground State Configuration of Each Element:**
- **Silver (Ag)**: The ground state configuration is [Kr] 4d10 5s1.
- **Copper (Cu)**: The ground state configuration is [Ar] 3d10 4s1.
- **Lead (Pb)**: The ground state configuration is [Xe] 4f14 5d10 6s2 6p2.
- **Titanium (Ti)**: The ground state configuration is [Ar] 3d2 4s2.

2. **Determine the Configuration of Each Ion:**
- **Ag³⁺**: Loses 3 electrons. Configuration becomes [Kr] 4d8 (not an inert gas configuration).
- **Cu²⁺**: Loses 2 electrons. Configuration becomes [Ar] 3d9 (not an inert gas configuration).
- **Pb⁴⁺**: Loses 4 electrons. Configuration becomes [Xe] 4f14 5d10 (not an inert gas configuration).
- **Ti⁴⁺**: Loses 4 electrons. Configuration becomes [Ar] (which is the configuration of the inert gas Argon).

3. **Compare Each Configuration with Inert Gases:**
- **Ag³⁺**: [Kr] 4d8 (not an inert gas).
- **Cu²⁺**: [Ar] 3d9 (not an inert gas).
- **Pb⁴⁺**: [Xe] 4f14 5d10 (not an inert gas).
- **Ti⁴⁺**: [Ar] (this is the configuration of the inert gas Argon).

4. **Conclusion:**
- The ion that has the same electronic configuration as an inert gas is **Titanium 4+ (Ti⁴⁺)**, which has the configuration of Argon.

### Final Answer:
The correct option is **Titanium 4+ (Ti⁴⁺)**.