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111. Sodium's atomic number is 11. What does this tell you about an atom of sodium?

a) It contains 11 protons.
b) It contains 11 neutrons.
c) Its atomic mass is double this amount.
d) It has 11 protons to lose in ionic bonds.

User Kaigorodov
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1 Answer

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11 protons a I would say
User Rathma
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