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April 18, 2015

Homework Help: Chemistry

Posted by Anonymous on Sunday, March 24, 2013 at 11:39pm.

For each electron in a ground-state Be atom, select the set of quantum numbers that represents it. Check all that apply.

n=1 l=0 ml=-1 ms= +1/2
n=1 l=0 ml=0 ms=-1/2
n=2 l=1 ml=0 ms= -1/2
n=1 l=0 ml=0 ms=+1/2
n=2 l=1 ml=1 ms=+1/2
n=2 1=0 ml=0 ms=+1/2
n=2 l=0 ml=0 ms=-1/2
n=2 l=0 ml=0 ms=-1

I know the top one and the last one aren't correct but I don't know about the others. The hint said,"Make sure you have chosen exactly four answers" why will it have 4?

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