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The atomic number (number of protons) of the element is needed to tell the number of neutrons.

Mass number = atomic number + number of neutrons.

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How many neutrons are in one atom?

The number of neutrons in one atom can vary depending on the element. Neutrons are one of the three main subatomic particles found in an atom, along with protons and electrons. The number of neutrons in an atom is calculated by subtracting the number of protons (atomic number) from the atomic mass of the atom.


How do you calculate how many neutrons there are in a atom?

The atomic weight minus the number of protons = the atom's neutrons.


How do you find out how many neutrons a atom has?

Mass number = Atomic number (or number of protons) + Number of neutrons


How many neutrons have an atom with a mass number of 20 and 11 neutrons?

How many neutrons would it have if it had 11 neutrons? 11.


How many neutrons does an atom of nitrogen have if the mass number is 13?

6 neutrons


How many number neutrons magnesium?

A stable magnesium atom has 12, 13 or 14 neutrons. The atom with 12 neutrons is the most common one.


How many neutrons does a technetium atom have?

For each isotope the number of neutrons is different. Number of neutrons = Mass number of an Tc isotope - 43


How do you figures out how many neutrons are in an an atom?

Finding out how many neutrons are in a atom is easy. All you have to do is find the element's atomic number and atomic weight.


How do you tell how many neutrons are in an atom with the atomic number of 12?

To find the number of neutrons in an atom with an atomic number of 12 (which is the number of protons), you would subtract the atomic number from the atomic mass number. The atomic mass number is the sum of the protons and neutrons in the atom. For an atom with an atomic number of 12, the number of neutrons can be calculated by subtracting 12 from the atomic mass number given for that specific atom.


How many neutrons are in one atom in fluorine?

subtract the atomic number by the Atomic Mass, and that is the answer. if its a neutral atom, there are probably the same number neutrons as protons.


Will each atom of an element always have the same number of neutrons?

No many elements have multiple isotopes with different numbers of neutrons. Every atom of a certain isotope has the same number of neutrons


How many neutrons does an atom of 21Ne have?

An atom of 21Ne has 11 neutrons. This is determined by subtracting the atomic number (which is 10 for neon) from the atomic mass number (which is 21 in this case).