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Class 10 > Which element has 12 neutrons?
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Which element has 12 neutrons?

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Sodium
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Qualified (Engg from NIT) & experienced mentor with 6+ yrs experience.

Since asked which element which has 12 neutron so it is Magnesium element which has 12 neutrons. But if you asked about isotopes then there is a large number of them.
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magnesium
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For a particular no. of proton there is one element having 12 neutrons that is magnesium. i.e 12 protons+12 neutrons. Only one isotope of Mg has 12 neutrons, Mg-24. But so does Na-23, Ne-22, F-21, O-20, N-19, C-18, and B-17. And then there are Al-25, Si-26, P-27, S-28, Cl-29 and Ar-30. All of these...
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For a particular no. of proton there is one element having 12 neutrons that is magnesium. i.e 12 protons+12 neutrons. Only one isotope of Mg has 12 neutrons, Mg-24. But so does Na-23, Ne-22, F-21, O-20, N-19, C-18, and B-17. And then there are Al-25, Si-26, P-27, S-28, Cl-29 and Ar-30. All of these have 12 neutrons. read less
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