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# How do you find the number of neutrons from the mass number?

Updated: 5/22/2024

Wiki User

6y ago

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.

Wiki User

12y ago

1mo ago

To find the number of neutrons from the mass number, subtract the atomic number from the mass number. The atomic number represents the number of protons in an atom, and by subtracting it from the mass number, you can determine the number of neutrons present.

Wiki User

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.

Wiki User

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.

Wiki User

6y ago

Number of neutrons = Mass number - Number of protons

Wiki User

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

### How do you find the neutrons for an atom?

Neutrons = Mass number - Number of Protons

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

To find the number of neutrons in an isotope, subtract the atomic number (number of protons) from the mass number (sum of protons and neutrons). The difference will give you the number of neutrons in the nucleus.

### How do you find out the mass number?

Mass number = Number of protons + number of neutrons

### 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

### What Used to find the number of neutrons?

To find the number of neutrons in an atom, subtract the atomic number (number of protons) from the atomic mass number. Neutrons are uncharged particles found in the nucleus of an atom and their number can vary for a given element based on isotopes.

### 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

### 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

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

Number of neutrons = Mass number - Number of protons