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Système International dâUnités. Internationally agreed coherent system of units: distance in metre (m), mass in kilogram (kg), time in second (s), current strength in ampere (A), temperature in kelvin (K), quantity of a substance in mole (mol) and strength of light in candela (cd) etc.
forces of attraction between two naturally occurring dipoles.
a group of elements between the metals and the non-metals. They are semiconductors and have some...
substances are seperated by the use of their different boiling points.
the forces between molecules which hold molecules together in the liquid or solid state,...