Ionic Radii Sizes Watch

KayleighEpps
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Hi!

Have a very simple question but it is giving me a bit of trouble:

When comparing a Cl- ion and a hypothetical S2+ ion, which would have the largest ionic radii and why?

Thanks!

- K
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Kvothe the Arcane
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{S^{2-}} would.
Less protons so a decreased electrostatic attraction between the valence electrons and nucleus.
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charco
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(Original post by KayleighEpps)
Hi!

Have a very simple question but it is giving me a bit of trouble:

When comparing a Cl- ion and a hypothetical S2+ ion, which would have the largest ionic radii and why?

Thanks!

- K
sulphur double positive?
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KayleighEpps
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(Original post by charco)
sulphur double positive?
Yes. It states S2+ - not 2- - the teacher is using a non-existent/un-natural ion in the question.
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Chung224
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cl- will have a larger atomic radii, both are in the same sub level (shielding is constant) but there is and overall charge on the sulfur of 2+ therefore the electrons are more attracted to the nucleus and thus have a smaller radius. Cl however has an extra electron further decreasing the attraction between the nucleus and the outer electrons and thus having a bigger ionic radius
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Borek
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While S2+ is not something that would exist in water solution, it should be not a problem to produce it in the gaseous phase, so it is not something purely hypothetical.
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