]> 2008-10-07T07:25:10-07:00 Arsenic 33 As 1.2437435485889E-25 5.727 NSCS Student Projects Project of Density ( g·cm−3g/ml)  g·cm−3g/ml Density Atomic weight (kg) kg Atomic weight Atomic symbol Atomic number Arsenic Metalloid Element NSCS Student Projects