Hw problem 2A.15

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aphung1E
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Joined: Sat Aug 24, 2019 12:15 am

Hw problem 2A.15

Postby aphung1E » Wed Oct 30, 2019 1:17 am

How do you solve this ? Is there a certain rule you have to follow?
2A.15 Write the most likely charge for the ions formed by each of
the following elements: (a) S; (b) Te; (c) Rb; (d) Ga; (e) Cd.

Kavya Immadisetty 2B
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Joined: Sat Aug 24, 2019 12:17 am
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Re: Hw problem 2A.15

Postby Kavya Immadisetty 2B » Wed Oct 30, 2019 3:08 am

Elements are generally likely to try and form an octet with the valence electrons (exceptions include H, Li, Be, and B who want to create a duplet). So S needs 2 electrons to form a full valence shell so the most likely ion is S2-. Te is also 2 electrons so it will form Te2-. Rb is 1 electron away from having a full valence shell so it's likely to form Rb+. Ga is 3 electron away from having a full valence shell so it's likely to form Ga3+. Cd's valence shell just includes the 5s-electrons so it will lose those 2 to form Cd2+.


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