Element Name: Barium
Atomic No.: 56
State (298 K): solid
Uses: medical
Atomic Mass: 137.33 g/mol
Density: 3.59 g/cm
3
B.P.: 1910 K
F.P.: 1002 K
Electronic Configuration: 1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
2
4p
6
4d
10
5s
2
5p
6
6s
2
Isotopes:
130
Ba 129.9062 amu (0.106%)
132
Ba 131.9057 amu (0.101%)
134
Ba 133.9043 amu (2.417%)
135
Ba 134.9056 amu (6.592%)
p;
136
Ba 135.9044 amu (7.854%)
138
Ba 137.9050 amu (71.70%)
Electronegativity: 0.89
Radius: 198 pm (covalent)
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