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Effective Charge on Valence Electrons of Sb

  • Thread starter BugzBunny
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Homework Statement


Given Slater's expression for effective charge below, determine the effective charge experienced by the valence electrons of Sb.


Homework Equations


Zeff = Z - 0.35a - 0.85b - c
Where
Z= the nuclear charge; a= the number of s and p electrons in the same shell; b= the number of s and p electrons in the shell one deeper; c= the remaining electrons

The Attempt at a Solution


I have grouped the electron configuration as such:
[1s2] [2s2 2p6] [3s2 3p6] [3d10] [4s2 4p6] [4d10] [5s2 5p3]

Zeff = 51 - 0.35(4) - 0.85(18) - 28 = 6.3

Is this the correct interpretation? My course notes and the problem's formulation are ambiguous so that the 4d electrons could be construed as a factor of b (× 0.85) or of c (× 1).

Thank you for your help.
 

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