Botzees
Keyestudio
Fischertechnik
Alkali Metals
Alkali Metals
Potassium 100gr (metal) in liquid paraffin
Potassium 100gr (metal)
Atomic Number (Ζ): 19
Atomic weight (Ar): 39.0983
Cas Number: 7440-09-7https://pubchem.ncbi.nlm.nih.gov/compound/Potassium
Sodium 100gr (metal)
Sodium, 11Na
| Phase at STP | solid |
|---|---|
| Melting point | 370.944 K (97.794 °C, 208.029 °F) |
| Boiling point | 1156.090 K (882.940 °C, 1621.292 °F) |
| Density (near r.t.) | 0.968 g/cm3 |
| when liquid (at m.p.) | 0.927 g/cm3 |
| Critical point | 2573 K, 35 MPa (extrapolated) |
| Heat of fusion | 2.60 kJ/mol |
| Heat of vaporization | 97.42 kJ/mol |
| Molar heat capacity | 28.230 J/(mol·K) |