The Metalloid Kids

Hosted By: Chris, Hutch, Sophia and Peyton

Metalloids History

The metalloids are

Boron

Boron’s symbol is B on the periodic table, it’s atomic number is 5, 10.811 amu is its atomic mass, and its color is brownish. It was discovered in 1808 by Sir Humphry Davy and J.L Gay-Lussac

Silicon

Silicon’s symbol is Si, its atomic number is 14, and its atomic mass is 28.0855 amu, and its color is grey.

Germanium

Germanium’s symbol is Ge, its atomic number is 32, its atomic mass is 72.61 amu, and its color is grayish. I

t was discovered in 1886 by Clemens Winkler

Arsenic

Arsenic symbol is As, its atomic unit was discovered in 1886 by Clemens Winkler

mber is 33, its atomic mass is 74.9216 amu, and its color is gray. Its exact date of discovery is unknown but its been known since ancient times, and its discoverer is unknown

Antimony

its symbol is Sb, its atomic mass is 51, its atomic mass is 121.76 amu, and its color is bluish. Its exact date of discovery is unknown but its been known since ancient times, and its discoverer is unknown.

Tellurium

Its atomic symbol is Te, its atomic number is 52, its atomic mass is 127.6 amu, and its color is silverish. I

t was discovered in 1782 by Franz Muller von Reichenstein

Polonium

its atomic symbol is Po, Its atomic number is 84, its atomic mass is (209.0) amu, and its color is unknown. It was discovered in 1896 by Pierre and Marie Curie.

VIDEO ABOUT METALLOIDS: http://www.youtube.com/watch?v=2WDED5qaflE&edufilter=Db24N54Eu_vpe4P65Iz5FA&safe=active



Boiling Points


BORON-

Melting Point: 2300.0 °C

Boiling Point: 2550.0 °C

USES: heat resistant alloys

SILICON-

Melting Point: 1410.0 °C

Boiling Point: 2355.0 °C

USES: glass and semiconductors

GERMANIUM-

Melting Point: 937.4 °C

Boiling Point: 2830.0 °C

USES: semiconductors

ARSENIC-

Melting Point: 817°C

Boiling Point: 614°C

USES: Poison, it conducts electricity, and semiconductors

ANTIMONY-

Melting Point: 630.0 °C

Boiling Point: 1750.0 °C

USES: used for hardens lead, plastics, and chemicals

TELLURIUM-

Melting Point: 449.5 °C

Boiling Point: 989.8

°C

USES: coloring of glass and ceramics and also used with thermometric devices

POLONIUM-

Melting Point: 254.0 °C

Boiling Point: 962.0 °C

USES: There are no known uses for this element


Health and Environment Concerns

Acute Toxicity's can be found in some Metalloids that are very dangerous and is life threatening to a human. The leaching and toxicity of Metalloids have affected environmental factors such as pH, nature of the sorbets, presence and concentration of organic and inorganic ligands, including humic and fulvic acid, root exudates, microbial metabolites and nutrients



Number of Valence Electrons

Boron- 3 Valence Electrons


Silicon- 4 Valence Electrons


Germanium- 4 Valence Electrons


Arsenic- 5 Valence Electrons


Antimony- 5 Valence Electrons


Tellurium- 6 Valence Electrons


Polonium- 6 Valence Electrons