nameakki
All the atoms of a particular element have the same atomic number (number of protons). The atoms of different elements have different numbers of protons. For example, all oxygen atoms have 8 protons and all sodium atoms have 11 protons. The mass number of an atom is the total number of protons and neutrons it contains.
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KanikaMittal
Atomic Number of an element= No. of protons present in it.
Mass Number of an element= No. of protons+No. of Neutrons present in it.
Answers & Comments
Mass Number of an element= No. of protons+No. of Neutrons present in it.
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