Periodic Table; Effective Nuclear Charge
Chapter , Problem 11E(choose chapter or problem)
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.
Relative abundances of elements.*Elements in percent by mass in Earth’s crust (including
oceans and atmosphere) and the human body.
Name two significant differences between the elemental composition of Earth’s crust and the elemental composition of the human body.
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