Introduction
What is the geometry for complexes with coordination number 2?
Linear
Define monodentate ambivalent ligand.
ligands containing 2 different atoms carrying lone pairs, both capable to form dative bond with the central metal ion (but only one at a time)
How many d-orbitals are there?
5
How many unpaired electrons are there in an octahedral, low-spin iron (III) complex? (proton number of Fe is 26)
1
What is the spdf notation for Cu (proton number 29)?
[Ar]3d10 4s1
What is the type of structural isomerism in the following pair?
[Co(H2O)6]Cl3 vs [Co(H2O)5Cl]Cl2.H2O
Hydrate isomerism
What is the geometry with CN = 5 that CANNOT be explained by Kepert model?
Square Pyramidal
Is octahedral low-spin Mn (II) complex paramagnetic or diamagnetic?
paramagnetic
What is the spdf notation for Mn4+ (proton number 25)?
[Ar]3d3
How many possible isomers may be exhibited by [PdClBr(NH3)(H2O)]?
3
eg orbitals have energy _______higher than average while t2g orbitals have energy _______ lower than average.
0.6 (delta)o and 0.4 (delta)o
Explain why crystal field splitting energy increases with increasing oxidation state of the transition metal.
smaller radius, more repulsion
Why is [Ni(en)3]2+ more stable than [Ni(H2O)6]2+?
Due to chelate effect
How many possible isomers may be exhibited by [Pd(NH3)2(ox)]?
1
red
The magnetic moment of [Mn(H2O)6]2+ is 5.92 μB. Is this a high-spin or low-spin complex? Explain.
High spin
The central ion in K3[Fe(CN)6] possesses a d? configuration?
d5
Draw all isomers for [Co(ox)2Cl2]4-
3 isomers
trans, cis and its enantiomer
[Co(NH3)6]3+ is a yellow complex and [Co(NH3)5(H2O)]3+ is a red complex, which complex has a smaller crystal field splitting energy? Explain.
[Co(NH3)5(H2O)]3+
Red (green), Yellow (purple), Green larger wavelength hence smaller crystal field splitting energy
-0.4 (delta)o