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The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory