what is atomic number
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the number of protons in the nucleus of atom,which is characteristic of a chemical element and determines it's place in the periodic table
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Atomic number is the number of protons in the nucleus of an atom. It is the number of a chemical element in the periodic table.
Extra information:
- Elements are arranged in the periodic table according to their atomic numbers.
- It is denoted by letter Z.
- It determines the identity of any element.
- Atomic number = numbet of protons.
- For example the atomic numbers of different elements:
- Helium = 2
- Boron = 5
- Oxygen = 8
- Fluorine = 9
- Sodium = 11
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