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12-09-2017
Physics

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What is the number of protons in an atom of sodium? A) 11 B) 11.9897 C) 12 D) 23

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12-09-2017

sodium has eleven (11) electrons, in a 2-8–1 configuration, with that one lonely valence electron in the outermost orbital/shell, accounting for the high degree of reactivity. In the nucleus are eleven (11) protons and twelve (12) neutrons.

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