The liquid range of an element is the temperature range over which the element remains liquid (at atmospheric pressure). Numerically, it is the difference between the boiling point and the melting point, and is here expressed in ░C, degrees Centigrade. Neptunium has the greatest liquid range of any element at 3262░C, followed closely by thorium at 3040░C. Gallium, 'said' to have the highest liquid range, comes about 10th at 2373░C, with a m.p. of 30░C and a b.p. of 2403░C is used in high-temperature thermometers, where mercury simply boils away above 357░C. The noble gases, helium, neon, argon, krypton, xenon and radon have very small liquid ranges reflecting the very small inter-atomic forces between these atoms.
