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OpenStudy (anonymous):

Sodium has the atomic number 11. How many electrons are in a sodium ion, which has the symbol Na=?

OpenStudy (anonymous):

okay well sodium has an atomic number of 11, it has 11 protons and neutrons, but it only has 10 electrons. and Sodium is the element in which has the symbol of Na.

OpenStudy (anonymous):

No. The atomic number of an atom is the number of protons and the number of electrons in a neutral atom is equal to the number of protons.

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