not_XIX_forever
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Report Thread starter 9 months ago
#1
Hi,
Would anyone kindly explain the difference between:
a) shielding
b) distance between nucleus and outer e-

I thought they were interchangeable, but somebody told me they are not.

Surely as no of shells increases, shielding increases and distance b/w nucelus and outer e- also increases, both of which mean attraction b/w nucleus & outer e- decreases.
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coronavirus1
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:eek:
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Keels25
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I think rather than being interchangeable, the shielding effect happens when new shells are added and that causes weakening of attraction of outer e to nucleus. Shielding doesn’t itself determine the distance between the nucleus and outer electrons - that is determined by shell number. Essentially shielding is a separate effect (caused by increased shell number) but in combination with distance from nucleus, the combined effect is weakened attraction of outer e to nucleus ... so they’re two separate factors resulting in the same thing if that makes sense?
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