destroyer 131 chem

[pistolpete007]

which is not a possible ground state configuration?

a. 3D^6 sublevel w/ 6 unpaired electrons
b.3D^2 SUBLEVEL W/ 2 UNPAIRED electrons
c.5D^3 sublevel w/ 3 unpaired electrons
d.7S^2 sublevel w/ 0 unpaired electrons


arnt all of these wrong except for see......Im going to use X as an up arrow and Y as a down arrowand im going to use a Z to represent empty orbtals......
A we have XY X X X X thus 4 UNPAIRED electrons
in b we have X X Z Z Z.....eventhough there are 3 empty orbitals they are unpaired so it should have 5 unpaired electrons
C. X X X Z Z still 5 unpaired

d XY which is correct

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[happyasaclam88]

for b and c, the remaining orbitals are empty, not unpaired - that means there's no electrons, so there's none to be unpaired! as far as i can tell, the only incorrect one is A. is that the answer?

 

[Doctor PJ]

answer is A. Each orbital gets one electron one at a time. Orbitals with no electrons don't count since they don't have any unpaired electrons. hope that helps!