How many neutrons in the iron nucleus?

1 Answer
anor277
Nov 14, 2016

You haven't specified the isotope.

Explanation:

#""^56Fe# is approx. 95% abundant. Because it is an iron isotope, we know that there are 26 protons in the element's nucleus (how do we know this?). Because it is the #""^56Fe# isotope, there must be #56-26=30" neutrons"# in this nucleus.

And thus there are #26+30# nucleons, massive nuclear particles present in the nucleus. Capisce?

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