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23-10-2016
Chemistry

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If an atom contains 11 protons and 12 neutrons, what is its atomic number?

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denispanait denispanait

23-10-2016

Atomic number is Z. Z=number of protons, so Z=11

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Аноним Аноним

23-10-2016

The sodium has 11 protons and because it is neutral it has 11 electrons.

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