1. Sodium is the sixth most abundant element in the Earth's crust, occurring
in large quantities as common salt, NaCl, and yet sodium metal wasn't first
produced until the early 19th century.
a. From your knowledge of the position of sodium in the reactivity series,
suggest a method for manufacturing sodium from sodium chloride. You
aren't expected to give details of the manufacturing process, but should
describe and explain (including equation(s) where relevant) how sodium is
formed in your process.
b. Suggest why sodium wasn't produced until the early 19th century.
c. Suggest three other metals which might have been first isolated from
their compounds at the same sort of time.
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