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Kelvin Celsius Fahrenheit Comments 1 H hydrogen (H 2) use: ... melting point 302.9146 K ... 34 Se selenium (hexagonal, gray) use: 494 K:
The minimum distance between chains is 343.6 pm. Gray selenium is formed by mild heating of other allotropes, by slow cooling of molten selenium, or by condensing selenium vapor just below the melting point. Whereas other selenium forms are insulators, gray selenium is a semiconductor showing appreciable photoconductivity.
34 Se selenium (hexagonal, gray) use: 958 K: ... Values are in kelvin K and degrees Celsius °C, ... Melting points of the elements (data page) ...
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: 184.3 3.69 –5.96 –5.87 K b & K f [1] Lauric acid: 298.9 44 –3.9
Selenium is a nutrient that is naturally present in many foods, added to others and is also available as a dietary supplement in pill, powder and liquid form, explains Perri Halperin, a ...
In the case of the Celsius scale (and the long since defunct Newton scale and Réaumur scale) the melting point of ice served as such a starting point, with Celsius being defined (from the 1740s to the 1940s) by calibrating a thermometer such that: Water's freezing point is 0 °C. Water's boiling point is 100 °C.
Boca Raton, Florida, 2003; Section 6, Fluid Properties; Critical Constants. Also agrees with Celsius values from Section 4: Properties of the Elements and Inorganic Compounds, Melting, Boiling, Triple, and Critical Point Temperatures of the Elements Estimated accuracy for Tc and Pc is indicated by the number of digits.
34 Se selenium; use: 95.48 CRC: 95.48 LNG: 95.48 WEL: 26 ... Values refer to the enthalpy change in the conversion of liquid to gas at the boiling point (normal, 101. ...