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CA1 - Inorg Grp Properties > 6B: Chromium subgroup | 7A: Halogens > Flashcards

6B: Chromium subgroup | 7A: Halogens Flashcards

1
Q

CHROMIUM SUBGROUP

A

Cr, Mo, W, u

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2
Q

RA / antioxidant

(Chromium)

A

Cr^2+

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3
Q

Trace element glucose tolerance factor; present in brown sugar

(chromium)

A

Cr^3+

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4
Q

Toxic

(chromium)

A

Cr^6+

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5
Q

Precipitant (in Argentometric Titration/Complexometry)

A

CrO4^2-

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6
Q

Strong OA (K2Cr2O7)

A

Cr2O7^2-

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7
Q

Trace element: co factor for flavin dependent enzymes, xanthine oxidase

A

Molybdenum

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8
Q

deficiency of Cr^3+

A

secondary hyperglycemia

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9
Q

For bacterial fixation of atmospheric N2

A

Molybdenum

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10
Q

Wolfram

A

Tungsten

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11
Q

atomic reactor/ bombs; important nuclear fuel

A

uranium (radioactive element)

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11
Q

Use of tungsten

A

filaments in light bulbs ( ^ Melt pt, -low volatility)

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12
Q

discoverer of uranium

A

Becquerel (the SI unit for radioactivity 1 Bq = 1 decay/sec)

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13
Q

non SI unit for radioactivity

A

curie

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14
Q

HALOGENS

A

F, Cl, Br, I, At

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15
Q

Most active non-metals; Sea-salt producers

A

HALOGENS

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16
Q

valence of halogens

A

-1

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17
Q

Strongest OA; most electronegative element

A

Flourine

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18
Q

Super halogen (Linus Pauling)

A

Fluorine

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18
Q

test for halogens forming green flame

A

beilstein test

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19
Q

Fluorine has a Suppressive effect on __________

A

thyroid; antithyroid

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20
Q

poisoning of fluorine

A

fluorosis

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21
Q

manifestation of fluorosis

A

mottled enamel, abnormal bone growth

21
Q

anticariogenic (Also: rodenticide, insecticide)

A

Sodium fluoride, NaF
Stannous fluoride, SnF2

22
2%, 4 applications
Sodium fluoride, NaF
23
most abundant extracellular ANION
chlorine
23
8%, 1 applicalion
Stannous fluoride, SnF2
24
Chloros (greenish yellow)
chlorine
24
Dephlogisticated muriatic acid (HCI)
chlorine
25
use of chlorine
Water disinfectant (MOA; halogenation-chlorination), gas has bleaching & antiseptic properties
26
Dark/ reddish brown fuming liq. w/ suffocating odor
Bromine
27
poisoning of bromine
bromism
28
antidote for bromism
NaCl & NH4CI antidote
29
for prep of sx for Fourier Transform Infrared Spectroscopy (FT-IR) (pellets) - Functional grp determination
KBr
30
uses of bromine
powerful caustic germicide; sedative depressant (all bromide)
31
(1% Br water)/ Bromine water
Bromine TS
32
(0.1N Br/ Koppeschar's soln)- KBrO3 & in H2O
Bromine VS
33
3 Bromine elixirs - sedative depressant
Na, K, NH4
34
5 Bromide elixirs
Na, K, NH4, Li, Ca
35
Iodine easily undergoes sublimation, giving off ____________ (lodination 1^-1 to I2 with KMnO4)
violet vapor
35
Heaviest nonmetal; solid w/ metallic sheen (most met. non-metal)
Iodine
36
Iodine trace element
T3 & T4 (thyroid hormone/synthesis)
37
Thyroxine/ tetraiodothyronine (T4):
more abundant
37
Triiodothyronine (T3):
more active
38
uses of iodine
Expectorant, Antifungal; Antibacterial (1:5000 or 0.02%)
39
2% I2 in water + NaI
Iodine solution
40
2% I2 soln + 50% alc. + NaI
Iodine tincture
41
5% I2 in water + KI
Strong iodine/lugol's sol
42
7.5% I2 soln. + 88.5% alc. + KI (disinfectant)
strong iodine tincture
42
antibacterial, irritant (iodine)
Phenolated iodine/boulton's soln.
42
composition of Phenolated iodine/boulton's soln.
Composition: 15mL Lugol's soln; 6mL phenol, 1L glycerine
43
I2 complexed w/ org. complexing agent (PVP - non ionic surfactant) as solubilizer
Iodophors
44
Povidone Iodine (Betadine) disadvantage
- staining, idiosyncratic rxn - 1% (oral mouthwash): 7.5% (douche); 10% (antiseptic/wound infection)
45
Povidone Iodine (Betadine) advantage
slow release of I2 stability reduced irritation, oral toxicity
46
Only metallic, synthetic and radioactive halogen
astatine

CA1 - Inorg Grp Properties (11 decks)

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