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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
Q

2%, 4 applications

A

Sodium fluoride, NaF

23
Q

most abundant extracellular ANION

A

chlorine

23
Q

8%, 1 applicalion

A

Stannous fluoride, SnF2

24
Q

Chloros (greenish yellow)

A

chlorine

24
Q

Dephlogisticated muriatic acid (HCI)

A

chlorine

25
Q

use of chlorine

A

Water disinfectant
(MOA; halogenation-chlorination), gas has bleaching & antiseptic properties

26
Q

Dark/ reddish brown fuming liq. w/ suffocating odor

A

Bromine

27
Q

poisoning of bromine

A

bromism

28
Q

antidote for bromism

A

NaCl & NH4CI antidote

29
Q

for prep of sx for Fourier Transform Infrared Spectroscopy (FT-IR) (pellets) - Functional grp determination

A

KBr

30
Q

uses of bromine

A

powerful caustic germicide; sedative depressant (all bromide)

31
Q

(1% Br water)/ Bromine water

A

Bromine TS

32
Q

(0.1N Br/ Koppeschar’s soln)- KBrO3 & in H2O

A

Bromine VS

33
Q

3 Bromine elixirs - sedative depressant

A

Na, K, NH4

34
Q

5 Bromide elixirs

A

Na, K, NH4, Li, Ca

35
Q

Iodine easily undergoes sublimation, giving off ____________
(lodination 1^-1 to I2 with KMnO4)

A

violet vapor

35
Q

Heaviest nonmetal; solid w/ metallic sheen (most met. non-metal)

A

Iodine

36
Q

Iodine trace element

A

T3 & T4 (thyroid hormone/synthesis)

37
Q

Thyroxine/ tetraiodothyronine (T4):

A

more abundant

37
Q

Triiodothyronine (T3):

A

more active

38
Q

uses of iodine

A

Expectorant, Antifungal; Antibacterial (1:5000 or 0.02%)

39
Q

2% I2 in water + NaI

A

Iodine solution

40
Q

2% I2 soln + 50% alc. + NaI

A

Iodine tincture

41
Q

5% I2 in water + KI

A

Strong iodine/lugol’s sol

42
Q

7.5% I2 soln. + 88.5% alc. + KI (disinfectant)

A

strong iodine tincture

42
Q

antibacterial, irritant

(iodine)

A

Phenolated iodine/boulton’s soln.

42
Q

composition of Phenolated iodine/boulton’s soln.

A

Composition: 15mL Lugol’s soln; 6mL phenol, 1L glycerine

43
Q

I2 complexed w/ org. complexing agent (PVP - non ionic surfactant) as solubilizer

A

Iodophors

44
Q

Povidone Iodine (Betadine) disadvantage

A
  • staining, idiosyncratic rxn
  • 1% (oral mouthwash): 7.5% (douche); 10% (antiseptic/wound infection)
45
Q

Povidone Iodine (Betadine) advantage

A

slow release of I2 stability reduced irritation, oral toxicity

46
Q

Only metallic, synthetic and radioactive halogen

A

astatine

CA1 - Inorg Grp Properties (11 decks)

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