if it is a negative charge then it will contribute to pi e density ie two es should be added to pi e density
n
if it is + charge then it will not contribute any more es...ie...only pi density of d ring shoud be considered
hope it will help
never curse ur conditions....ask urself wt all sincerity...whether u r doing ur best or not?...u wl get the ans n get started.......GOODLUCK Dr. Meenal
Moderation Team
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