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34 Se selenium (hexagonal, gray) use: 958 K: ... For the equivalent in degrees Fahrenheit °F, see: Boiling points of the elements ... Melting points of the elements ...
451 24 Cr chromium; use: ... 34 Se selenium; use: 95.48 CRC: 95.48 ... Values refer to the enthalpy change in the conversion of liquid to gas at the boiling point ...
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
34 Se selenium; use (gray) 6.69 CRC (gray) 6.69 ... Values refer to the enthalpy change between the liquid phase and the most stable solid phase at the melting point ...
Upon its release, Fahrenheit 451 was a critical success, albeit with notable dissenters; the novel's subject matter led to its censorship in apartheid South Africa and various schools in the United States. In 1954, Fahrenheit 451 won the American Academy of Arts and Letters Award in Literature and the Commonwealth Club of California Gold Medal.
The temperature at standard pressure should be equal to the normal boiling point, but due to the considerable spread does not necessarily have to match values reported elsewhere. log refers to log base 10 (T/K) refers to temperature in Kelvin (K) (P/Pa) refers to pressure in Pascal (Pa)
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.
The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at a standard pressure such as 1 atmosphere or 100 kPa.