Which element below could be an isotope of this atom?

Answer:
The name of the isotope is Be-10(Beryllium-10)
Explanation:
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The isotopes of an element are equal atoms that have the same number of protons but different numbers of neutrons.
In this case, the element is beryllium which in its most stable isotope has 4 protons and 5 neutrons.
The name of the isotope is Be-10(Beryllium-10)