alleryEffective nuclear charge Z_eff for the 2p electron of carbon (using Slater's rules approximately):
A6
BCannot determine
C1
DApproximately 3.25
Answer & Solution
Correct answer: D. Approximately 3.25
For 2p in carbon (Z = 6), Slater rules: inner 1s² electrons contribute 0.85 each = 1.7
same shell (other valence) electrons contribute 0.35 each = ~1.05 (for 3 other valence electrons).
σ ≈ 2.75. Z_eff = 6 - 2.75 ≈ 3.25. The valence electron 'feels' an effective +3.25 charge.
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