S orbitals lower energy than p orbitals

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Nawaphan Watanasirisuk 3B
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S orbitals lower energy than p orbitals

Postby Nawaphan Watanasirisuk 3B » Thu Dec 06, 2018 9:56 pm

Why do electrons in the s orbitals have lower energy than those in the p orbital if the e- in s orbital shield the nuclear pull from those in p. Why do the e- in p orbitals have more energy if it experiences less nuclear attachment/pull since they are further from the nucleus and are shielded? Is it because the energy is compared to a free e- which has the highest energy and so the less the pull to nucleus the closer an electron is to being free and in the highest energy state? Please clarify, thank you!

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Re: S orbitals lower energy than p orbitals

Postby Chem_Mod » Thu Dec 06, 2018 10:07 pm

It takes energy to separate opposite charges. Thus, an electron farther away from the nucleus would have more energy.

Lydia Luong 4L
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Joined: Fri Sep 28, 2018 12:24 am

Re: S orbitals lower energy than p orbitals

Postby Lydia Luong 4L » Thu Dec 06, 2018 10:23 pm

electrons in the p field further away from the nucleus, which causes a higher nuclear attraction, since more distance requires more energy to pull it together.

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