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 electronic configuration of an element is 1S²…How many unpaired electrons are there in an atom of…The number of electrons in the valence shell of an…The presence of unpaired electrons in an atom of a…What quantity of electrons (in mole) is lost when…