there are 12 neutrons in magnesium it is neutral
12 , 12 , 12
there are 12 protons in an atom of magnesium:-)
There are too many elements to list how many nuetrons each one has, but as a general rule of thumb you can subtract the atomic number (number of protons) from the molecular mass number (Which is generally the number of protons and nuetrons added, since electrons weigh very little) to obtain the number of nuetrons For example, Carbon has an atomic mass of 12. Subtract the atomic number, which is 6, and you will get the number of nuetrons, which is also 6.
there are 12 nuetrons in an atom of magnesium
The # of nuetrons in any element is the Atomic Mass - the # of protons In this case the atomic mass was 24.3 minus the protons (12) equals 12
Magnesium's atomic number is 12. Thus, to be electrically neutral, it must have 12 protons and 12 electrons. 24Mg is magnesium's most common isotope having 24 - 12 = 12 neutrons.
10 12
There are 6 neutrons in carbon-12. Carbon-12 has an atomic number of 6, which indicates the number of protons in its nucleus. The sum of protons and neutrons gives the atomic mass of an element, so carbon-12 has a total of 12 nucleons. Subtracting the 6 protons gives the number of neutrons.
I don't have a periodic table, but round its atomic mass to a whole number and subtract the amount of protons which equal the atomic number. So if the atomic mass is 24 and the atomic number is 12, 24-12=12.- example
12 neutrons. Since the atomic number of Mg is 12 (which means Mg atom has 12 protons, and 12 electrons) and the mass number of the isotope is 24 (which means 24 nucleons, or 24 protons and neutrons in total), we derive the number of neutrons by 24 - 12 = 12.
12 protons, 12 electrons, 12 neutrons
Neon is element number 10 on the periodic table, therefore is has 10 protons and in a neutral atom (not an ion) it also has 10 electrons