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Topic: Please help in question on Periodic Trends and Structure of Atom  (Read 2861 times)

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Offline sam12103

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Please help in question on Periodic Trends and Structure of Atom
« on: November 11, 2009, 08:39:56 PM »
56.

Which ions in the following list are not likely to be found in chemical compounds:  K^2+, Cs^+, Al^4+, F^2-, and Se^2-? Explain Briefly.


Can you please help me on this problem, I have been pondering for the correct answer but I can't seem to find it.... Can you please explain to me how you solve this question?
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Offline Borek

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Re: Please help in question on Periodic Trends and Structure of Atom
« Reply #1 on: November 12, 2009, 03:02:13 AM »
What valences dominate in periodic table groups?
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