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Which atom has as many 's' electrons as ...

Which atom has as many 's' electrons as P-electrons 

A

H

B

N

C

Na

D

Mg

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question "Which atom has as many 's' electrons as 'p' electrons?", we will analyze the electronic configurations of the given options: hydrogen, nitrogen, sodium, and magnesium. ### Step-by-Step Solution: 1. **Identify the Electronic Configuration of Each Element:** - **Hydrogen (H)**: Atomic number = 1 - Electronic configuration: 1s¹ - **Nitrogen (N)**: Atomic number = 7 - Electronic configuration: 1s² 2s² 2p³ - **Sodium (Na)**: Atomic number = 11 - Electronic configuration: 1s² 2s² 2p⁶ 3s¹ - **Magnesium (Mg)**: Atomic number = 12 - Electronic configuration: 1s² 2s² 2p⁶ 3s² 2. **Count the 's' and 'p' Electrons for Each Element:** - **Hydrogen**: - s electrons = 1 (from 1s¹) - p electrons = 0 (no p electrons) - **Nitrogen**: - s electrons = 4 (2 from 1s² + 2 from 2s²) - p electrons = 3 (from 2p³) - **Sodium**: - s electrons = 5 (2 from 1s² + 2 from 2s² + 1 from 3s¹) - p electrons = 6 (from 2p⁶) - **Magnesium**: - s electrons = 6 (2 from 1s² + 2 from 2s² + 2 from 3s²) - p electrons = 6 (from 2p⁶) 3. **Compare the Number of 's' and 'p' Electrons:** - **Hydrogen**: s = 1, p = 0 (not equal) - **Nitrogen**: s = 4, p = 3 (not equal) - **Sodium**: s = 5, p = 6 (not equal) - **Magnesium**: s = 6, p = 6 (equal) 4. **Conclusion:** - The atom that has as many 's' electrons as 'p' electrons is **Magnesium (Mg)**, with both having a count of 6. ### Final Answer: The correct option is **Magnesium (Mg)**. ---
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