1...among the following C-O bond order is lowest in :
(a)[Mn(co)6]+
(b)[Fe(co)5]
(c) [Cr(co)6]
(d)[V(co)6]
2..why Cr3+ never forms tetrahedral complexes even if V3+, Fe3+ form ????????
3.. hich can xists as disastereomers ?????
(a) [Cr(NH3)2Cl4]
(b) [Fe(NH3)5Br]2+
(c) [FeCl2(NCS)2]2+
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1 Answers
29Ans 1 b... more d electrons means the metal can donate more electrons in the antibonding orbital of carbonyl grp thus weaking the Carbon oxygen bond...so bond order is minimum in this case..
Ans 3 c.. NCS- is an ambidentate ligand..so can coordinate both from N and S..so it can form a diastereomers..
