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NEET levelSingle correct optionDifficulty 1 of 3pt061

In a multi-electron atom the relative penetration towards the nucleus of electrons in the same shell follows the order:

A $s = p = d = f$
B $f > d > p > s$
C $p > s > d > f$
D $s > p > d > f$

Answer: D

An

s

electron has a finite probability density at the nucleus and penetrates the inner shells most; penetration decreases through

p

,

d

and

f

.

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