How did he know 1 unit is 1/12 of the weight of carbon atom.
In: 62
Also an atomic unit (or a Dalton, as it’s sometimes called) is somewhat arbitrary. It was just decided to say that 1 unit is 1/12 the weight of a carbon atom. Or more accurately that 12 grams of carbon atoms is equivalent to 1 mole of carbon. Also, this was decided by the International Bureau of Weights and Measures, not Mendeleev as far as I know. Mendeleev is more known for organizing the periodic table in a similar shape to today’s shape and predicting elements based on filling in blank spots in his periodic table.
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