the # of protons in an atom of sodium-23 is
The number of protons in an atom is the same as the atomic number of an atom.
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To find the number of protons in an atom of sodium-23, you can refer to the periodic table. The atomic number of an element represents the number of protons in its nucleus. In this case, sodium has an atomic number of 11.
Hence, for an atom of sodium-23, which is an isotope of sodium, it means it has 11 protons.
To find this information yourself, you can follow these steps:
1. Search for the periodic table on the internet or refer to a printed version.
2. Locate the element symbol for sodium (Na) on the periodic table.
3. Find the corresponding atomic number for sodium, which is 11.
4. Therefore, the number of protons in an atom of sodium-23 is 11.