Group Properties of Elements Group IV-A Flashcards

1
Q

other name for group IV-A

A

CARBON GROUP

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2
Q

Unique Properties of C

A

Catenation, hybridization, allotropy

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3
Q

what unique ppty of C:
only element that can form multiple
bonds in itself, chain/ring-formation

A

catenation

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4
Q

what unique ppty of C:
different physical forms but have the same chemical composition

A

allotropy

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5
Q

allotropes of carbon

A

Crystalline, amorphous (coals)

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6
Q

purest native
form of uncombined carbon

A

Crystalline: Diamond (tetrahedral)

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7
Q

Hardest mineral known

A

Crystalline: Diamond (tetrahedral)

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8
Q

Softest: T ALC/Mg silicate
(MgSiO3 ● H2O)

A

Crystalline: Graphite (planar)

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9
Q

Bituminous other name

A

soft coal

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10
Q

Bituminous allotrope type

A

Crystalline: Graphite (planar)

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11
Q

Anthracite other name

A

hard coal

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12
Q

Anthracite allotrope type

A

Amorphous

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13
Q

Coke other name

A

impure carbon; coal heated
strongly in the absence of air

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14
Q

Coke allotrope type

A

Amorphous

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15
Q

2nd most abundant element on Earth

A

SILICON (Si)

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16
Q

lung fibrosis caused by inhalation of silica

A

silicosis

17
Q

toxicity of silicon

A

silicosis

18
Q

Also known as Eka-silicon

A

GERMANIUM (Ge)

19
Q

● Immunostimulant
● Antitumor

A

GERMANIUM (Ge)

20
Q

Stannum

A

TIN (Sn+2,+4)

21
Q

(+) Tin cans

A

TIN (Sn+2,+4)

22
Q

Derived from Plumbum

A

LEAD (Pb+2,+4)

23
Q

Poisoning: Plumbum/Plumbism

A

LEAD (Pb+2,+4)

24
Q

tx for Pb poisoning

A

EDTA/Calcium versenate

25
Q

(+) Automobile exhaust, old pipes, canned foods,
ba eries, paints

A

LEAD (Pb+2,+4)

26
Q

Group IV-A Use: Protein precipitant (heavy metal); astringent,
antibacterial

A

LEAD (Pb+2,+4)