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Question 45Asked in BPSC TRE 1.0 (2023) Chemistry Class 11-12

The effective nuclear charge for Na (11) isNa (11) के लिए प्रभावी नाभिकीय आवेश है

Na (11) के लिए प्रभावी नाभिकीय आवेश है
  1. A+1+1
  2. B+2.2+2.2
  3. C+6.8+6.8
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
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Correct answer: (B) +2.2+2.2

Explanation

By Slater's rules for the 3s electron of Na (1s² 2s² 2p⁶ 3s¹): S = 8 × 0.85 + 2 × 1.00 = 8.8, so Zeff = 11 − 8.8 = +2.2.Na के 3s इलेक्ट्रॉन (1s² 2s² 2p⁶ 3s¹) के लिए स्लेटर के नियम से: S = 8 × 0.85 + 2 × 1.00 = 8.8, इसलिए Zeff = 11 − 8.8 = +2.2।

From BPSC TRE 1.0 (2023) Chemistry Class 11-12 — Previous Year Paper

This is question 45 of BPSC TRE 1.0 (2023) Chemistry Class 11-12 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.