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September 2, 2014

Homework Help: Chem Please Help

Posted by Sami on Saturday, November 24, 2007 at 5:21pm.

I know how to write elctron configurations but I am having problems with electron config. of main group ions.

Problem: Using condensed electron configurations, write reactions for the formation of the common ions of the following element: Iodine (Z=53)

Solution: I ([Kr] 5s24d105p5)+ e- arrow I- ([Kr]5s24d105p6) (same as Xe)

I have went over it many times and I dont understand what is being asked and how the answer was gotten. Please help.

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