The number of radial nodes in 3sand 2p respectively are (JEE 2005)

Question

The number of radial nodes in 3sand 2p respectively are				(JEE 2005)

**Options:**
- **A.** 2 and 0
- **B.** 0 and 2
- **C.** 2 and 1
- **D.** 1 and 2

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**Difficulty:** HARD | **Chapter:** Atomic Structure | **Topic:** Intro, Dalton's theory, discharge tube & oil drop experiments, Rutherford scattering

Accepted Answer

## ✅ Correct Answer: **A**

### 📖 Detailed Explanation:
**Solution:**

**Radial nodes** = n - l - 1

For **3s orbital:**
- n = 3, l = 0
- Radial nodes = 3 - 0 - 1 = **2**

For **2p orbital:**
- n = 2, l = 1
- Radial nodes = 2 - 1 - 1 = **0**

**Answer: 3s has 2 radial nodes, 2p has 0 radial nodes**

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The number of radial nodes in 3sand 2p respectively are (JEE 2005)

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