calculate effective nuclear charge on 4s electron in potassium(At. No:k=19)
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Explanation:
The effective nuclear charge of 4s electron in potassium is, 2.20
Explanation :
As we are given that, the element is potassium that has atomic number 19.
The electronic Configuration of (K), Potassium is,
1s^2 2s^2 2p^6 3s^2 3p^6 4s^1
Formula used to calculate the effective nuclear charge is:
(Zeff)4s = Z−σ
and,
σ = 0.85 × (number of electrons in (n - 1)th shell) + 1.00 × (total number of electrons in the inner shell)
= 0.85×8+1.00×10
= 16.80
So,
Z_{eff} = 19−16.80=2.20
Thus, the effective nuclear charge of 4s electron in potassium is, 2.20
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