Answer:
C
Explanation:
because its half life is shorter than the subsequent ones
I’m sorry but could you type the questions out? I can’t really see the question
They flow and can take the shape of their container
<span>The option A is correct answer. The isotopes are X and Y. The isotopes are those which have same atomic number but different mass number. Since atomic number has same number of protons or electrons. Thus, isotopes have same number of protons or electrons. Therefore, X and Y are isotopes.</span>
