Font size
WorksheetsPOP QUIZ CHM579
Total questions: 20
Worksheet time: 12mins
BMO is formed due to
Constructive Interference
Destructive Interference
Different sign of wave function
Both 2 & 3
Which is pie bond combination????
2s-2s
2s-2px
2px-2px
None of these
In order to make both the ligand and metal orbitals overlap, both of the orbitals must have
an equal or a nearly equal energy levels
same number of electrons
unpaired electrons
a position/direction towards overlapping to each other.
Which of the following statements is true?
Electrons are never found in an antibonding MO.
All antibonding MOs are higher in energy than the atomic orbitals of which they are composed.
Antibonding MOs have electron density mainly outside the space between the two nuclei.
None of the statements is true
The electron configuration of a particular diatomic species is (σ2s)2(σ*2s)2(σ2p)2(π2p)2(π*2p)4. What is the bond order for this species?
1.5
1
0.5
0
2
What is the bond order of He2+?
2
0
1/2
1
1 1/2
Carbon monoxide has ten bonding electrons and four antibonding electrons. Therefore it has a bond order of
3
7
1/2
2
1.5
Choose an experimental analysis that can be use to study the effect of synergic bonding between metal and carbonyl complex.
Gas Chromatography Analysis
X-ray crystallography Analysis
•Infrared spectroscopy Analysis
UV-Visible Analysis
Arrange the following species in decreasing order of IR stretching frequencies: Bridging 2 CO, Terminal CO, Bridging 3 CO, free CO
Bridging 2 CO > Terminal CO > Bridging 3 CO > free CO
free CO > Bridging 2 CO > Terminal CO > Bridging 3 CO
Bridging 3 CO > Bridging 2 CO > Terminal CO > free CO
free CO > Terminal CO > Bridging 2 CO > Bridging 3 CO
The _______the charge on the organometallic species, the _____ the tendency of the metal to donate to the p* of CO and the ______ the energy of the C-O stretching vibrations.
more negative, lower, higher
more positive, greater, lower
more negative, greater, lower
neutral, lower, higher
In coordination chemistry, the donor atom of a ligand is
a Lewis acid
the counter ion
the central metal atom
the atom in the ligand that shares an electron pair with the metal
(Valance Bond Theory) Magnetic measurements indicate that [Co(OH2)6]2+ has 3 unpaired electrons. Therefore, the hybridization of the metal's orbitals in [Co(OH2)6]2+ is:
sp3
dsp2
sp3d2
d2sp3
(Valence Bond Theory) The coordination complex, [Cu(OH2)6]2+ has one unpaired electron. Which of the following statements are true?
(1) The complex is octahedral.
(2) The complex is an outer orbital complex.
(3) The complex is d2sp3 hybridized.
(4) The complex is diamagnetic.
(5) The coordination number is 6.
1, 4
1, 2, 5
2, 3, 5
2, 3
1. CFT views the interaction between metal ions and ligands in complexes in terms of electrostatic _______________ and ____________________.
attraction, repulsion
positive, negative
cation, anion
Which orbital is very important in CFT?
orbital p
orbital s
orbital d
When the ligands move along the x, y and z axes of d orbital in metal ion (octahedral geometry), they approach directly toward or between the lobes. Name the d orbitals that feel less repulsion?
dz2 and dx2- y2
dxy, dxz and dyz
dz2
dxy and dxz
When the ligands move along the x, y and z axes of d orbital in metal ion (octahedral geometry), they approach directly toward or between the lobes. Name the d orbitals that feel strong repulsion?
dz2 and dx2- y2
dxy, dxz and dyz
dz2
dxy and dxz
The splitting of orbital energies is called the crystal field effect
True
False
Strong field ligand is which give small splitting energy
true
false
What is the oxidation state of Ni ion in coordination compound [Ni(NH3)6]^2+ ?
+1
+2
+3
+4
