The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom? 28
30
56
58

Ais the correct answer

Small amounts of matter are converted intolarge amounts of energy occurs in both fusion and fission reactions. they are nuclear reactions where a change in the identity or characteristics of an atomic nucleus results when it is bombarded with an energetic particle, as in fission, fusion, or radioactive decay.

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