Where was Sodium first discovered?
Location:
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Sodium was first discovered in Britain in 1807, where a chemist named Sir Humphry Davy found it by electrolysis of caustic soda.

Explanation:

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London, UK (Royal Institution)

Explanation:

Humphry Davy isolated sodium in October 1807, by reducing NaOH with Fe , a few days after isolating potassium

source: Weeks ME. The discovery of the elements. IX. Three alkali metals: Potassium, sodium, and lithium. Journal of Chemical Education. 1932 Jun;9(6):1035.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.