The atomic number of iron is 56. The number of unpaired electrons in the Fe3+ ion is? by Sunday | Apr 20 | Chemistry NECO | 0 comments A. 1 B. 2 C. 3 D. 4 E. 5 Correct Answer: Option C – 3 Users Also Read These:The number of electrons in the valence shell of an…if an element X with atomic number 13 combines with…A metallic ion Z2+ with an inert gas structure…The atomic number of chlorine is 17. What is the…The electronic configuration of an element is 1S²…