Rights: Public domain - worldwide Published 17 September 2009 Size: 47 KB Referencing Hub media

Element 101 is called mendelevium in honour of Dmitri Mendeleev. Mendeleev designed a chart that allowed the known elements to be grouped according to their properties.

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    Gallium

    Gallium is perhaps best known as a metal that is a solid when you pick it up and melts when it sits in your hand. Elemental gallium is a liquid at temperatures higher than 29.76C, which is below ...

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    Development of the periodic table

    Although elements such as gold, silver, tin, copper, lead and mercury have been known since earliest times, the first scientific discovery of an element occurred around 1669. Hennig Brand, a ...

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