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Mathematics 10 Online
OpenStudy (anonymous):

why in the electronic configuration of Chromium we write 3d^5 4s^1 rather than 3d^6

OpenStudy (anonymous):

This help? http://answers.yahoo.com/question/index?qid=20090813234843AA7J3jO

OpenStudy (anonymous):

this reason is too complex by the way how can we figure out that we have to write it as 3d^5 and 4s^1 if i forget this?

OpenStudy (anonymous):

Beats me, I'm not a chemist. It's supposed to be 4s2 3d4 (isn't it?) so I guess you'll just have to remember that chromium is (-1,1) the usual.

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