Element Name: Potassium (lt. Kalium)
Atomic No.: 19
State (298 K): solid
Uses: fertilizers and glass
Atomic Mass: 39.098 g/mol
Density: 8.62 g/
3
B.P.: 1047 K
F.P.: 336.8 K
Electronic Configuration: 1s
2
2s
2
2p
6
3s
2
3p
6
4s
1
Isotopes:
39
K 38.964 amu (93.2581%)
40
K 39.974 amu (0.0117%)
41
K 40.962 amu (6.7302%)
Electronegativity: 0.82
Radius: 203 pm (covalent)
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