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Penetration power towards nucleus o...

Penetration power towards nucleus of various orbitals are `4s gt 4p gt 4d gt 4f .` which one has more penetration power between `""_(12) Mg and ""_(13) Al `?

Text Solution

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1)` ""_(12) Mg 1s^(2) 2s^(2) 2p^(6) 3s^(2) `
`2) ""_(13) Al = 1s^(2) 2^(2) 2p^(6) 3s^(2) 3p^(1) `
3) Penetration power is more in `""_(12) Mg ` than `""_(13) Al` because `3s gt 3P .`
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