The element that is being referred to here is the element called Hafnium.
What is the name of the isotope?
Now we know that the atomic number of an element shows us the number of electrons in the neutral atom or the number of protons in the atom. It is the identity of the element hence we can use it to identify what this isotope is.
The atomic number is the number that appears as a subscript in the symbol of an atom while the mass number appears as a superscript in the symbol of a compound. The symbol of an element helps us to identify it.
Now we can see that the isotope has 72 electrons and protons to ensure neutrality. Thus the element that is being referred to here is the element called Hafnium. It has 72 electrons, 72 protons and 116 neutrons
Learn more about atomic number:https://brainly.com/question/16858932
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