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Fermium is a synthetic chemical element; ... as the explosions were spreading debris through melting and vaporizing rocks under the great depth of 300–600 meters ...
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.
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Francium's melting point was estimated to be around 8.0 °C (46.4 °F); [11] a value of 27 °C (81 °F) is also often encountered. [8] The melting point is uncertain because of the element's extreme rarity and radioactivity ; a different extrapolation based on Dmitri Mendeleev 's method gave 20 ± 1.5 °C (68.0 ± 2.7 °F).
Atomic number (Z): 100: Group: f-block groups (no number): Period: period 7: Block f-block Electron configuration [] 5f 12 7sElectrons per shell: 2, 8, 18, 32, 30, 8 ...
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.
Unbinilium should be a solid at room temperature, with melting point 680 °C: [98] this continues the downward trend down the group, being lower than the value 700 °C for radium. [99] The boiling point of unbinilium is expected to be around 1700 °C, which is lower than that of all the previous elements in the group (in particular, radium ...
However the group 12 metals have much lower melting and boiling points since their full d subshells prevent d–d bonding, which again tends to differentiate them from the accepted transition metals. Mercury has a melting point of −38.83 °C (−37.89 °F) and is a liquid at room temperature.