Question: You might have expected that the elements would have been discovered in order of their relative abundance in the Earth's crust (Figure 1.6), but this

You might have expected that the elements would have been discovered in order of their relative abundance in the Earth's crust (Figure 1.6), but this is not the case. Suggest a general reason.

Aluminum Iron 7.5% Other 9.2% 47% Calcium 3.4% Silicon 25.7% Oxygen 49.5% Earth's crust Other 7% Hydrogen 10% Oxygen 65% Carbon 18%

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