what are isotopes ?how are they represented?
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Isotopes are atoms with the same number of protons but that have a different number of neutrons. Since the atomic number is equal to the number of protons and the atomic mass is the sum of protons and neutrons, we can also say that isotopes are elements with the same atomic number but different mass numbers.
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⟹ Isotope :-
- Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties.
- Every chemical element has one or more isotopes.
⟹ They are represented as :-
- To write the symbol for an isotope, place the atomic number as a subscript and the mass number (protons plus neutrons) as a superscript to the left of the atomic symbol.
The symbols for the two naturally occurring isotopes of chlorine are written as follows:
3517Cl
3717Cl
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