Isotops are atoms of the same elements having the same atomic nmbr but different mass nmbrs.
eg- hydrogen has 3 isotops
an isotop of uranium is used as a fuel in nuclear reactors.
an isotop of iodine is used in the treatment of goitre.
isobars are atoms of different elements having dffrnt atomic nmbr bt same mass nmbr.
eg- calcim and argon.
iron and nickle are also isobar.
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