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![[Post New]](/templates/default/images/icon_minipost_new.gif) 23 Apr 2008 18:10:20 IST
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ya bcoz CN- a strong ligand induces pairing...
in cr (stability of half filled d orbital) 4s1 3d 5. cr3+ 3d3 so there'll b unpaired e- making it para magnetic ..
all other cases they get paired due to CN-
u can chk out other cases this way...
so ans 1 , 3 , 4
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