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

Barium is a chemical element with symbol Ba and atomic number 56. It is the fifth element in Group 2, a soft silvery metallic alkaline earth metal. Because of its high chemical reactivity barium is never found in nature as a free element.

56 Atomic Number
137.33 Atomic Mass (u)
1002.15 Melting Point (K)
2170 Boiling Point (K)
3.51 Density (solid: g/cm³, gas: g/liter)
2.8 Atomic Radius (Å)
2.15 Covalent Radius (Å)
0.89 Electronegativity
5.21 First Ionization Energy (eV)
13.95 Electron Affinity
6 Number of Shells
2 Electron Valency
2, 8, 18, 18, 8, 2 Electron Shell Occupations
0.2 Specific Heat (J/g)