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Semimetallics


KEY ELEMENT CLASSIFICATION
Chemical Element Symbol Key
2
5
10.811
Name: Boron
Symbol: B
Atomic Weight: 10.811
Atomic Number: 5
Element Classification: Semimetallic
Discovered By: Sir H. Davy, J.L. Gay-Lussac, L.J. Thenard
Discovery Date: 1808 (England/France)
Name Origin: The Arabic and Persian words for borax.
3
14
28.0855
Name: Silicon
Symbol: Si
Atomic Weight: 28.0855
Atomic Number: 14
Element Classification: Semimetallic
Discovered By: Jons Jacob Berzelius
Discovery Date: 1824 (Sweden)
Name Origin: Latin: silex, silicus, (flint).
4
32
72.61
Name: Germanium
Symbol: Ge
Atomic Weight: 72.61
Atomic Number: 32
Element Classification: Semimetallic
Discovered By: Clemens Winkler
Discovery Date: 1886 (Germany)
Name Origin: Latin: Germania (Germany).
4
33
74.92159
Name: Arsenic
Symbol: As
Atomic Weight: 74.92159
Atomic Number: 33
Element Classification: Semimetallic
Discovered By: Known to the ancients.
Discovery Date: n/a (Unknown)
Name Origin: Greek: arsenikon; Latin: arsenicum, (both names for yellow pigment).
5
51
121.760
Name: Antimony
Symbol: Sb
Atomic Weight: 121.760
Atomic Number: 51
Element Classification: Semimetallic
Discovered By: Known to the ancients.
Discovery Date: n/a (Unknown)
Name Origin: Greek: anti and monos (not alone), symbol from mineral stibnite.
5
52
127.6
Name: Tellurium
Symbol: Te
Atomic Weight: 127.6
Atomic Number: 52
Element Classification: Semimetallic
Discovered By: Franz Joseph Meller von Reichenstein
Discovery Date: 1782 (Romania)
Name Origin: Latin: tellus (earth).
6
84
208.9824
Name: Polonium
Symbol: Po
Atomic Weight: 208.9824
Atomic Number: 84
Element Classification: Semimetallic
Discovered By: Pierre and Marie Curie-Sklodowska
Discovery Date: 1898 (France/Poland)
Name Origin: Named for Poland, native country of Marie Curie.


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