Input interpretation
neptunium | melting point
Result
644 °C (degrees Celsius)
Unit conversions
917 K (kelvins)
1190 °F (degrees Fahrenheit)
1650 °R (degrees Rankine)
515 °Ré (degrees Réaumur)
346 °Rø (degrees Rømer)
Comparisons as temperature
(50 to 700) °C below typical temperature of magma (700 to 1300 °C)
16 °C below melting point of aluminum (660.32 °C)
160 °C above typical temperature of an electric oven during self-cleaning (900 °F)
Corresponding quantities
Thermodynamic energy E from E = kT: | 79 meV (millielectronvolts)
Blackbody energy flux Φ from Φ = σT^4: | 40121 W/m^2 (watts per square meter)
Approximate luminous exitance from a planar blackbody radiator perpendicular to its surface: | 1 lx (lux)
Thermodynamic properties
phase at STP | solid melting point | 644 °C (rank: 67th) boiling point | 4000 °C (rank: 13th) molar heat of fusion | 10 kJ/mol (rank: 47th) molar heat of vaporization | 335 kJ/mol (rank: 32nd) (properties at standard conditions)