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1. Isotopes of elements havea) The same physical propertiesc. different number of neutronsb. different chemical propertiesd. different atomic numbers

Answer» <p>Isotopes are atoms that have the same number of protons and electrons, but a different number of neutrons. Changing the number of neutrons in an atom does not change the element. Atoms of elements with different numbers of neutrons are called "isotopes" of that element.</p> <p>a answer the same physical properties</p>


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