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Isobars r those elements which have the same mass number but diff atomic number. since they have diff atomic number dey have diff chemical properties. as they have same mass number hence they have same physical properties.

isotopes r those elements which have same atomic number but diff mass number. they have same chemical properties but diff physical properties.
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ISOBAR one of two or three atomic weight bot different atomic number
ISOTOPES a form of chemical element whose atomic nucleus contains a specific number of neutrons in addition to the number of protons that uniquely defines the element. the nuclei of most atoms contain neutrons as well as protons
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