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Effective nuclear charge of 4s electron in iron

Answer»

ong>Answer:

The inner electrons have LESS SHIELDING while the outer electrons have more shielding, and hence the effective nuclear CHARGE DIFFERS from orbit to orbit. ... Screening effect of 4s = 0×0.35+8×0.85+10×1 = 0+6.8+10= 16.8. As 4s electron has only 1 electron, so 0×0.35



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