thallium thallium My fraction was atomic number 81. It is atomic number 81. It has 81 protons and negatrons and 123 neutrons. Thallium has a potful of 204.3833 atomic mass units. Its characteristic is Tl. It resides in Group IIIA of the fortnightly table. That is the aluminum family. Thallium has a bluish color subsequently exposure to the air. It is a sincerely soft and malleable metal. It has an negatron configuration of 1s22s23s23p64s23d104p65s24d105p64f145d106s26p1. It has 6 electron shells. It melts at 576.7 K and boils at 1730 K. It is a solid when at room temperature. Thallium was spy in 1861 by a British chemist and physicist.
His frame was Sir William Crookes. He discovered it spectroscopically in England. He isolated it. In 1862, the French chemist Claude marvelous again isolated it. Thallium comes form the Greek daybook "thallos". "Thallos" meant "green twig" or "green shoot". Thallium does not have legion(predicate) uses. It is used in photocells...If you rent to get a extensive essay, order it on our website:
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