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Which of the following is always true about radioisotopes?

A) They have unstable nuclei.

B) Their neutron-to-proton ratio is 1:1.

C)Their decay products are stable isotopes.

D) all of the above
 The answer is A , I just passed my test.

User Viktoriya
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2 Answers

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they have an unstable nuclei

User Sturkmen
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A) They have unstable nuclei.

Isotopes are atoms with the same atomic number but different mass number.
User Kenwyn
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