State the metals in the cymbal alloys

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Reference no: EM13192892

1. A labile ion undergoes rapid ligand exchange.

a. True
b. False

2. A trans isomer has identical ligands opposite to each other.

a. True
b. False

3. How many unique isomers are possible for Na[CoCl4(NH3)2] if the geometry is based on an octahedron?

a. Four
b. Two
c. One
d. Three

4.What kind of isomers polarize incident light with equial magnitude but in opposing directions?

a. racemic mixture
b. enantiomers
c. linkage isomers
d. diastereoisomers

5. Select the correct numbers of unpaired electrons for Mn2+ in weak and strong octahedral crystal fields?

a. 1 only
b. 2 only
c. 3 only
d. 4 or 2
e. 5 or 1
f. 4 or 0
g. 3 or 1
h. 0 only

6.Which transition metal complex has five unpaired electrons?

a. [Mn(H2O)6]2+
b. CrCl3(H2O)3
c. [Mn(CN)6]3-
d. [Ag(NH3)2]+

7. What are reasons that metals are used in metalloproteins?

a. They help position the reactant molecules to facilitate the reaction.
b. They make electron transfer proceed more rapidly.
c. They enhance the structural stability of the enzyme.
d. All of the above

8. When a metal ion is at the centre of an octahedral complex, the crystal field that is subsequently established causes the five d atomic orbitals to become non-degenerate. Select from options 1-4 below, referring to the figure below which shows how these five energy levels are rearranged.

a. Option 1
b. Option 2
c. Option 4
d. Option 3

9. Which of the metals in the cymbal alloys might be able to be quantitatively measured using UV-vis spectrophotometry. Select one or more:

a. Ni
b. Zn
c. Cu
d. Sn

10. Which other techniques (from the list below) may be used to perform a quantitative analysis for inorganic materials? Select one or more:

a. Atomic Absorption Spectrometry
b. Boiling Point Analysis
c. Volumetric Analysis
d. Infrared Spectroscopy
e. Gravimetric Analysis
f. Thin Layer Chromatography
g. Melting Point Analysis
h. NMR Spectroscopy

Reference no: EM13192892

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