Which of these refers to atoms with the same atomic number but different atomic masses? a. these atoms have different numbers of protons. b. these atoms have different numbers of electrons. c. these atoms are isomers. d. these atoms are isotopes. e. these atoms are different elements.

d. These atoms are isotopes.

Explanation:

Isotopes -  

These are the chemical elements that have different number of neutron .

The isotopes have same number of protons but have number of neutrons different .

Since , the number of neutrons in an atom equals to the atomic number of the elements , when the atom is in neutral state , i.e. , no charge .

Therefore for isotopes , the atomic number remains the same ,

Since , the atomic mass is given by the sum of the number of protons and neutrons , and therefore , the atomic mass is different for the isotope of an element .

Hence , from the information of the question , the correct term for the statement is isotope .

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the answer is d.) potassium