Homework Help: chemistry help-

Posted by michael on Wednesday, October 8, 2008 at 6:12pm.

Which of the following has the lowest second ionization energy?

a. Ca b. Ne c. K d. Ar e. Na

Arrange the following set of ions in order of increasing atomic radii.

Ca2+, Cl-, K+, P3-, S2-

a. Ca2+ < K+ < P3- < S2- < Cl-
b. K+ < Cl- < Ca2+ < S2- < P3-
c. P3- < S2- < Cl- < K+ < Ca2+
d. Ca2+ < K+ < Cl- < S2- < P3-
e. Cl- < S2- < P3- < Ca2+ < K+

chemistry help- - bobpursley, Wednesday, October 8, 2008 at 7:12pm
What is your thinking on this?

http://www.chemguide.co.uk/atoms/properties/atradius.html

http://images.google.com/imgres?imgurl=http://www.usm.maine.edu/~newton/Chy251_253/Lectures/OctetRule/IE1vsIE2.GIF&imgrefurl=http://www.usm.maine.edu/~newton/Chy251_253/Lectures/OctetRule/OctetRule.html&h=240&w=252&sz=16&hl=en&start=23&sig2=ovI8SfJCq2IwOUEq1ZH1vw&um=1&usg=__9sGSavqCFbLCHI6ZA8z5MZpZOQ4=&tbnid=XDqkYGzBeXfs7M:&tbnh=106&tbnw=111&ei=SD7tSITMBoO0hAL1qZiYCg&prev=/images%3Fq%3Dperiodic%2Btrends%2Bsecond%2Bionization%26start%3D20%26ndsp%3D20%26um%3D1%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26sa%3DN

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