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)