Question

The valuevof screening constant for an electron in 1s orbital screening another 1s electron is

Answer 1

What is the screening effect of Fe in a 4S shell? Atomic Number = 26. Formula for S & P - electrons: Sigma = (n-1)*0.35 + (n')*0.85 + (n")*1. (2-1)*0.35 + 14*0.85 + 10*1 = 23.25.

Answer 2

Answer:

20.65

Explanation:

Screening consistent is a degree of the screening / protective of an electron from the fee of the nucleus through other, internal electrons.Effective nuclear fee Z eff =Z−S

where,  Z = atomic variety and S = screening consistent

The price of S for special orbits-    

       

         = 0.35 consistent with electron for an electron in nth orbit.

         = 0.eighty five consistent with electron for electrons in (n - 1)th orbit

         = 1.00 consistent with electron for electrons in (n - 2)th, (n - 3)th, (n - 4)th orbit

         = 0.30 consistent with electron in 1s-orbital (whilst alone)

So, for 1s electron

Z eff =21−0.35

        =20.65

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