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Atomic Mass is the number of protons in an atom

mass number is the number of protons plus neutrons in an atom

the number of neutrons would equal the mass number minus the atomic number.

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12y ago
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8y ago

Atomic number -> Number of protons

Mass number -> Number of protons and neutrons

So. if you substract atomic number from the mass number you get the number of neutrons.

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12y ago

The number of neutrons per atom is a characteristic of a single isotope of an element and can be obtained by subtracting the atomic number of the element from the mass number of the isotope.

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6y ago

Number of neutrons = Mass number - Number of protons

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13y ago

relative atomic mass- atomic number

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Q: How do you find the number of neutrons from the mass number?
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Related questions

How do you find the number of neutrons when given a mass number?

Number of neutrons = Mass number - Number of protons


What Used to find the number of neutrons?

To find the number of neutrons in an atom you subtract the atomic mass fromthe mass number


How do you find the neutrons for an atom?

Neutrons = Mass number - Number of Protons


How do you find out the mass number?

Mass number = Number of protons + number of neutrons


To find the number of neutrons is an isotope start with the mass number and what?

The mass number of an isotope is the number of neutrons and protons in the isotope, let this be p +n = (mass number). To find the number of neutrons you need the atomic number (number of protons), let this be p. You then subtract the two: mass number - atomic number = no. of neutrons p + n - p = no. of neutrons = n


How do you calculate the number of neutrons an element has in its nucleus?

You need to find the atomic number, and the atomic mass. The atomic number i the number of PROTONS in the nucleus, the atomic mass, or mass number, is the number of PROTONS and NEUTRONS in the nucleus. To find the number of neutrons you subtract the atomic number from the mass number.


How do you find the number of neutrons in an elements atoms?

number of neutrons = mass number - atomic number


How do you find out mass number of an element?

Mass number = Number of Protons + Number of Neutrons


What equation do you use to find the number of neutrons in an element?

Number of neutrons = mass number - number of protons


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

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


How do you find the amount of neutrongs when you have its mass number?

Number of neutrons = Mass number - Number of protons


What does mass do?

The Atomic Mass is equal to the number of protons plus neutrons. So if you know the atomic number then you can find out the number of neutrons Atomic # is the amount of Protons or Electrons Atomic Mass- Number of protons plus neutrons Atomic Mass-Atomic Number = Amount of neutrons