Which amongst the following can lose 2 electrons to acquire the configuration of argon?

Options

A. N
B. Mg
C. Ca
D. Be

Answer

To determine which element can lose 2 electrons to acquire the electronic configuration of argon, we need to follow these steps:

### Step 1: Understand the Electronic Configuration of Argon
Argon is a noble gas with an atomic number of 18. Its electronic configuration is:
- **1s² 2s² 2p⁶ 3s² 3p⁶**

This means that argon has a total of 18 electrons.

### Step 2: Identify the Elements in the Question
We need to analyze the elements provided in the question (not specified in the transcript, but we will assume common candidates like Nitrogen, Magnesium, Calcium, and Beryllium).

### Step 3: Analyze Each Element
1. **Nitrogen (N)**:
- Atomic number: 7
- Configuration: 1s² 2s² 2p³
- After losing 2 electrons: 7 - 2 = 5 electrons (not equal to 18).

2. **Magnesium (Mg)**:
- Atomic number: 12
- Configuration: 1s² 2s² 2p⁶ 3s²
- After losing 2 electrons: 12 - 2 = 10 electrons (not equal to 18).

3. **Calcium (Ca)**:
- Atomic number: 20
- Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
- After losing 2 electrons: 20 - 2 = 18 electrons (equal to argon).

4. **Beryllium (Be)**:
- Atomic number: 4
- Configuration: 1s² 2s²
- After losing 2 electrons: 4 - 2 = 2 electrons (not equal to 18).

### Step 4: Conclusion
From the analysis, we find that only **Calcium (Ca)** can lose 2 electrons to acquire the electronic configuration of argon.

### Final Answer:
**Calcium (Ca)** is the element that can lose 2 electrons to acquire the configuration of argon.

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