Thallium - Periodic Table of Videos

Poisonous thallium is element number 81. Its chemical symbl is Tl. More links in description below ↓↓↓ Support Periodic Videos on Patreon: ...

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Thallium, because it is heavier, has two different so-called oxidation states. It can react with one atom of chlorine per thallium, or say three, and the different chemistry between thallium-one and thallium-three. Thallium salts are very poisonous, and there was quite a notorious case some years ago when a technician at some company, who turned out to be mad, was discovered to have been poisoning many of his colleagues with thallium and so, but it is not a widely used element, apart from a few materials that are used. There is a rather nice red material that is made of thallium, which has the rather unromantic name of KRS-5, this is mixed bromide and iodine with thallium which is used as windows for many infrared experiments. But because thallium is so poisonous, one has to be quite careful about...
Thallium - Periodic Table of Videos
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