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10 February, 08:54

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

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  1. 10 February, 10:15
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    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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