Group Properties of Elements Group IV-A Flashcards
other name for group IV-A
CARBON GROUP
Unique Properties of C
Catenation, hybridization, allotropy
what unique ppty of C:
only element that can form multiple
bonds in itself, chain/ring-formation
catenation
what unique ppty of C:
different physical forms but have the same chemical composition
allotropy
allotropes of carbon
Crystalline, amorphous (coals)
purest native
form of uncombined carbon
Crystalline: Diamond (tetrahedral)
Hardest mineral known
Crystalline: Diamond (tetrahedral)
Softest: T ALC/Mg silicate
(MgSiO3 ● H2O)
Crystalline: Graphite (planar)
Bituminous other name
soft coal
Bituminous allotrope type
Crystalline: Graphite (planar)
Anthracite other name
hard coal
Anthracite allotrope type
Amorphous
Coke other name
impure carbon; coal heated
strongly in the absence of air
Coke allotrope type
Amorphous
2nd most abundant element on Earth
SILICON (Si)
lung fibrosis caused by inhalation of silica
silicosis
toxicity of silicon
silicosis
Also known as Eka-silicon
GERMANIUM (Ge)
● Immunostimulant
● Antitumor
GERMANIUM (Ge)
Stannum
TIN (Sn+2,+4)
(+) Tin cans
TIN (Sn+2,+4)
Derived from Plumbum
LEAD (Pb+2,+4)
Poisoning: Plumbum/Plumbism
LEAD (Pb+2,+4)
tx for Pb poisoning
EDTA/Calcium versenate
(+) Automobile exhaust, old pipes, canned foods,
ba eries, paints
LEAD (Pb+2,+4)
Group IV-A Use: Protein precipitant (heavy metal); astringent,
antibacterial
LEAD (Pb+2,+4)
