The element with the atomic number 12 is magnesium if an atom has 12 protons and 13 neutrons.
A proton is a subatomic particle found in the nucleus of every atom.
The mass number of an isotope is the sum of the protons and neutrons in its atomic nuclei. And it is given that an atom has 12 protons and 13 neutrons. So we need to find out the atomic number of the atom.
If we know the mass number (A) and the number of neutrons (N), we can calculate the atomic number (Z) by subtracting the number of neutrons from the mass number.
A−N=Z
25−13=12
The atomic number of the element is 12.
Atomic number is the number of protons in the nuclei of all atoms of an element.
The element with the atomic number 12 is magnesium.
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