Question

please calculate the effective nuclear charge for 3d- electrons
in iron(Z=26) ​

Answer 1

Answer:

Number of electrons in the inner shells = 2 + 2 + 6 = 10. Effective charge of Fe for 3d electron = 26 - 10 = 16. 4s orbital is in the 4th shell, and thus the inner shells including the 1st, 2nd and 3rd shells (1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶). Number of electrons in the inner shells = 2 + 2 + 6 + 2 + 6 + 6 = 24.

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Answer 2

Answer:

7.45 is an answer of 3d electon in iron(Fe)26