It is well known that the number of elements has grown from four in the
days of the Greeks to 103 at present, but the change in methods needed
for their discovery is not so well known. Up until 1939, only 88
naturally occurring elements had been discovered.
days of the Greeks to 103 at present, but the change in methods needed
for their discovery is not so well known. Up until 1939, only 88
naturally occurring elements had been discovered.
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