Atomic number and atomic mass

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Atomic Mass and Atomic Number

Atomic mass:

- The sum of the number of protons and the number of neutrons in an atom.

- It is the average weight of an element.

- Atomic mass cannot be be used to define the type of element.

- Atomic mass is mostly measured using atomic mass unit

Both:

- The atoms of different elements all have different numbers of protons.

- You can find them in the periodic table.

Atomic Number:

- Atomic number is usually the number of protons present in an element’s nucleus.

- Atomic number helps in the classification and identification of an element.

- Atomic number is just a digit that is used to place elements in a periodic table.

- The number of protons in an atom.