Number of neutrons in magnesium 12 July 8, 2019 16 32 64 128 The number of neutrons in an atom of magnesium 1224mg is The number of neutrons present in 11 sodium and 12 magnetism is The number of neutrons present in any 11 and magnesium 12 is The number of neutrons present in 11 and 12 magnetism is Neutron number