Chemistry
Differentiate between atomic number and mass number
Atomic Structure
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Answer
Differences between atomic number and mass number:
| Atomic number | Mass number |
|---|---|
| The number of protons present in the nucleus of an atom of an element is called its atomic number, which is denoted by the letter Z. | The sum of the number of protons and neutrons present in the nucleus of the atom of an element is called its mass number, which is denoted by the letter A. |
| The atomic number of an element is a fixed value. It never varies. | An element can have different mass numbers (Isotopes). |
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