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Question

The penetration power within a principal quantum number goes like


A

s> p > d > f

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B

s < p < d < f

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C

s > p < d < f

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D

s < p > d > f

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Solution

The correct option is A

s> p > d > f


As we can see from the graphs of 2s and 2 p,It looks like

Penetration power generally means how close is it to the nucleus.

As we can see , there is more probability of finding an electron near the nucleus in 2s rather than 2p.

That's why we say,

2s > 2p [Penetration]

Similarly, within same 'n'

s > p > d >f


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