The number of neutrons in an atom is easily calculated by taking the mass number and subtracting the atomic number.
Take for example, Uranium: the mass number on the Periodic Table is 238, while the atomic number is 92. Take the difference of 238 and 92 and that will be equal to the number of neutrons.
238-92=146
Wiki User
∙ 13y agoYou can calculate the number of neutrons in an atom by subtracting the number of protons (which is the atomic number) from the Atomic Mass of the atom. The atomic mass is the sum of the number of protons and neutrons in the atom.
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∙ 16y agoTake the atomic mass, round it. Than subtract the atomic number and you have the neutrons (:
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∙ 12y agosubtract the atomic number from the atomic weight
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∙ 12y agoTake the atomic mass and round it to the nearest whole number. Then subtract this number and the atomic number of that element.
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∙ 12y agoWiki User
∙ 12y agoSubtract the atomic number from the isotope mass number.
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∙ 7y agoThe number of neutrons is the difference between mass number and the number of protons.
josephb2544
Subtract the atomic number from the atomic mass.
josephb2544
Wiki User
∙ 7y agomass number minus the atomic number
The mass number is the total number of protons and neutrons in an atom's nucleus. To calculate the mass number, simply add the number of protons and neutrons together in the nucleus of an atom.
A stable magnesium atom has 12, 13 or 14 neutrons. The atom with 12 neutrons is the most common one.
An atom of sulfur with a mass number of 35 would have 20 neutrons. To calculate the number of neutrons, subtract the atomic number (16 for sulfur) from the mass number (35).
To calculate the number of neutrons, subtract the atomic number from the mass number. In this case, for an element with a mass number of 155 and an atomic number of 63, the number of neutrons would be 92 (155 - 63 = 92).
An oxygen atom typically has 8 protons and 8 neutrons in its nucleus.
The atomic weight minus the number of protons = the atom's neutrons.
Atomic weight minus number of protons.
The mass number is used to calculate the number of protons and neutrons in an atom. It is the sum of the protons and neutrons in the nucleus of an atom.
Protons and neutrons= mass
protons and neutrons in an atom. It is the sum of protons and neutrons in the nucleus of an atom.
The mass number is used to calculate the number of nucleons in an atom. It represents the sum of protons and neutrons in the nucleus of an atom. By knowing the mass number, one can determine the approximate atomic mass of the atom.
The mass number is the total number of protons and neutrons in an atom's nucleus. To calculate the mass number, simply add the number of protons and neutrons together in the nucleus of an atom.
A typical atom of iodine contains 74 neutrons.
To calculate the atomic mass of an atom, you would add the number of protons and neutrons together. Protons and neutrons each have a mass of approximately 1 atomic mass unit (amu). The sum of the protons and neutrons will give you the atomic mass of the atom in atomic mass units.
45 neutrons
A stable atom of Zinc (Zn) typically has 34 neutrons.
52 neutrons.