Arsenic Rachael Simmons. Arsenic (symbol As) comes in two solid modifications: yellow, and grey (or metallic). It tarnishes in air and has an odor of.

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Presentation transcript:

Arsenic Rachael Simmons

Arsenic (symbol As) comes in two solid modifications: yellow, and grey (or metallic). It tarnishes in air and has an odor of garlic when burned. Arsenic and its compounds are poisonous, and it is found most commonly in sulfides. Its specific gravity ranges from 5.4 – 5.9+, its atomic number is 33, and its streak is black.

Chemical properties of Arsenic Atomic number 33 Atomic mass g.mol -1 Electronegativity according to Pauling 2.0 Density 5.7 g.cm -3 at 14°C Melting point 814 °C (36 atm) Boiling point 615 °C (sublimation) Vanderwaals radius nm Ionic radius nm (-2) 0,047 nm (+5) 0,058 (+3) Isotopes 8 Electronic shell [ Ar ] 3d 10 4s 2 4p 3 Energy of first ionisation 947 kJ.mol -1 Energy of second ionisation 1798 kJ.mol -1 Energy of third ionisation 2736 kJ.mol -1 Standard potential V (As 3+ / As )