Arsenic

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Arsenic
Arsenic
General Info
Atomic Symbol As
Atomic Number 33
Atomic Weight 74.9 g/mol74.9 amu
Chemical series metalloids
Appearance metallic gray
Group, Period, Block 15, 4, p
Electron configuration [Ar] 3d10 4s2 4p3
Electrons per shell 2, 8, 18, 5
CAS number [7440-38-2]
Physical properties
Phase solid
Density 5.727  g·cm−3 g/cm3
Melting point 1090 Kwarning.pngUnit conversion for unit " K" not supported.
Boiling point subl. 887 Kwarning.pngUnit conversion for unit " K" not supported.
Isotopes of Arsenic
iso NA half-life DT DE (MeV) DP

?

is stable with neutrons.
All properties are for STP unless otherwise stated.


Arsenic is the 33rd element. It is toxic to humans.


See Also

Facts about ArsenicRDF feed
Atomic number 33  +
Atomic symbol As  +
Atomic weight 74.9 g/mol (74.9 amu)  +
Boiling point warning.pngUnit conversion for unit " K" not supported.
Melting point warning.pngUnit conversion for unit " K" not supported.
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