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10203040506070809010011000.511.522.53‌ Å

33 - Arsenic metalloid

Atomic Mass (u)

74.92

Density (g/cm³)

5.73

Phase

Solid

Year of Discovery

1250
ArsenicAsElectron 1Electron 2Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 9Electron 10Electron 11Electron 12Electron 13Electron 14Electron 15Electron 16Electron 17Electron 18Electron 1Electron 2Electron 3Electron 4Electron 5

Arsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. Arsenic is a metalloid.

33 Atomic Number
74.92  u Atomic Mass
1090.15  K Melting Point
887  K Boiling Point
5.73  g/cm³ Density
1.3  Å Atomic Radius
1.19  Å Covalent Radius
2.18 Electronegativity
9.79  eV First Ionization Energy
77.65 Electron Affinity
4 Number of Shells
5 Electron Valency
2, 8, 18, 5 Electron Shell Occupations
0.33  J/g Specific Heat