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One doesn't generally "calculate" the number of neutrons. The number of neutrons in an atom is always equal to the number of protons, and the number of protons can be found on the Periodic Table of Elements, which can easily be found on the internet or in a science textbook.

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15y ago
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11y ago

The mass number of the given atom is equivalent to the sum of the numbers of protons and neutrons. The atomic number of an atom equals to the number of protons in that atom. Therefore, the number of neutrons of an atom can be found by subtracting the atomic number from the mass number.

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13y ago

Subtract the atomic number from the mass number. The result will be the number of neutrons.

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13y ago

You subtract the atomic number from the Atomic Mass.

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10y ago

A proton has possitive charge of electron.That is 1.602*10^-19.Multiply this by number of protons.

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14y ago

Number of neutrons = Atomic mass of an isotope - Atomic number of the element

Plutonium atomic number is 94.

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9y ago

Number of protons = Number of electrons = Atomic number

Number of neutrons = Mass number - Number of protons

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8y ago

Atomic number and mass number will help you. You can find number of electrons and protons by atomic number.

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Q: How can you determine the number of neutrons in an isotope?
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Related questions

How do you determine the isotope?

The atomic weight determines the isotope, which is determine by the number of neutrons.


What does the number of neutrons determine?

they determine the atomic mass of the atom


What determines the different isotopes from an atom?

The name of the element and the mass number (number of protons + neutrons) it is written e.g Uranium-235 or symbolically 235U


Why must you know both how many protons and how many neutrons an element has in order to fully identify it?

The number of protons determine what element it is, the number of neutrons determine what isotope it is.


What is the number of neutrons of californium?

For each isotope the number of neutrons is different.Number of neutrons = Mass number of an isotope - 98


How many number of neutrons does the isotope mendelevium have?

For each isotope of Md the number of neutrons is different.Number of neutrons = Mass number of a Md isotope -101


How can you dertermine the number of neutrons in a isotope?

Subtract the atomic number of the isotope from its atomic mass number to obtain the number of neutrons in an isotope.


What is the neutrons for technetium?

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


What is the number of neutrons in rutherfordium?

The number of neutrons is different for each isotope. Number of neutrons = Atomic mass of an isotope - 104


Number of isotope neutrons in beryllium?

Each isotope of beryllium has a different number of neutrons.


What is the average neutrons in ununpentium?

For each isotope the number of neutrons is different. Number of neutrons = Mass number of an isotope – atomic number


How many neutrons does a technetium have?

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