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Since 1891 lighting lamps have been manufactured in the Netherlands. The improvement today in comparison to the first lamp is enormous , especially with the intorduction of the gas discharge lamps. The life- time has increased by orders of magnitude . the colour is also an important aspect. Rare earth metal compunds like CeBr_(3) are now included to reach a colour temperature of 6000K in the lamp the compounds are ionic solids at room temperature , and upon heating they sublime partially to give a vapour of neutral metal halide molecules . To achieve a high vapour pressure, the sublimation enthalpy should be as low as possible. Conclusion in relation to the previous answers. was adding CsBr a good idea ? Mark the correct answer. implies Adding CsBr is counterproductive. implies AddingCsBr has no influence implies Adding CsBr is advantageous implies From these data no clear answer can be given.

Answer»


SOLUTION :N//A


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