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The twenty-third-century starship Enterprise uses the fusion of lithium atoms to dilithium for the production of energy. Mass of each lithium - 6 atom [tex]m=6.015121u[/tex] . Mass of the dilithium atom formed is [tex]M=12.000u[/tex]
(b)Energy is released per kg of dilithium formed [tex]E=2.26810[/tex]⨯ [tex]10^{14} J/kg[/tex]
Chemistry of lithium
Lithium was first identified as a component of of the mineral petalite and was discovered in 1817 by Johan August Arfwedson, but not isolated until some time later by W.T. Brande and Sir Humphry Davy. In its mineral forms it accounts for only 0.0007% of the earth's crust. It compounds are used in certain kinds of glass and porcelain products. More recently lithium has become important in dry-cell batteries and nuclear reactors. Some compounds of lithium have been used to treat manic depressives.
Lithium is an alkali metal with the atomic number = 3 and an atomic mass of 6.941 g/mol. This means that lithium has 3 protons, 3 electrons and 4 neutrons (6.941 - 3 = ~4). Being an alkali metal, lithium is a soft, flammable, and highly reactive metal that tends to form hydroxides. It also has a pretty low density and under standard conditions, it is the least dense solid element.
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