GROUP VIB
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1
THE CHROMIUM SUBGROUP
GROUP VI-B
2
forms compounds with
oxidation states of 2+, 3+ and 6+
oxidation states of 2+, 3+ and 6+
Chromium
3
form compounds in which they exhibit oxidation
states of 2+ through 6+.
states of 2+ through 6+.
Molybdenum and tungsten
4
For chromium the
most stable oxidation state is
most stable oxidation state is
3+.
5
form oxides of which those of higher molecular weight are acidic.
group VI-B
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Cr+2
green
7
Cr+3
blue
8
CrO4-2
yellow
9
Cr2O7-2
orange
10
Source of chromium
Chrome iron ore
11
Trace element
Glucose tolerance factor
Increases insulin sensitivity
Glucose tolerance factor
Increases insulin sensitivity
Chromium
12
Found in brown sugar & butter
Salts are destructive to tissues
Salts are destructive to tissues
Chromium
13
Chromium deficiency
mimics Diabetes Mellitus
14
Powerful oxidizing agent
K2Cr2O7
15
Essential trace element
Cofactor of enzyme that are flavin dependent
Cofactor of enzyme that are flavin dependent
Molybdenum
16
Use in nitrogen fixation involve in bacterial
fixing of atmospheric nitrogen
MoO+FeSO4 (Mol-Iron®)
fixing of atmospheric nitrogen
MoO+FeSO4 (Mol-Iron®)
Molybdenum
17
Radioactive element
Discovered by Becquerel
Manufacture of atomic bombs
Discovered by Becquerel
Manufacture of atomic bombs
Uranium
18
Use in making special steel alloys,
Filaments of electric lamps
as the anti-cathode in X-ray tubes.
Filaments of electric lamps
as the anti-cathode in X-ray tubes.
Tungsten
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