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Difference between atomic mass and mass …

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Difference between atomic mass and mass number

Posted by Yash Kumar 7 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 7 years, 1 month ago

While the mass number is the sum of the protons and neutrons in an atom, the atomic number is only the number of protons. The atomic number is the value found associated with an element on the periodic table because it is the key to the element's identity. The only time the atomic number and mass number are the same is when you are dealing with the protium isotope of hydrogen, which consists of a single proton. When considering elements in general, remember the atomic number never changes, but because there may be multiple isotopes, the mass number may change.

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