Rhodium Element Cube Meteorites Sodium's atomic number is 11

Sodium's atomic number is 11 and its symbol is Na

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Rhodium Element Cube Meteorites Sodium's atomic number is 11Rhodium is the most expensive of the precious metals at approximately $29,000 per ounce ($932 gram). Because of the extremely high cost of this metal, we are representing it with a rhodium plated disk. The rhodium on this disk is thicker than normal, so what you are seeing is indeed rhodium and not the silver alloy underneath.