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:What quantity of electrons is lost when one mole of…if an element X with atomic number 13 combines with…The atomic number of chlorine is 17. What is the…The number of unpaired electrons in an atom of an…The atomic number of chlorine is 17. What is the…