Dimer-Forming Transition Elements Given that Mn(CO)5 exists,find its chemical properties: Manganese:[Ar](4s)2(3d)5-7 valence e 5 CO's provide 10 electrons to Mn,leaving Mn with 17 total e; but Mn wants 18 electrons.So,Mn forms a dimer: CO CO co co Mn. Mn. C0二 Mn co co CO co CO CO CO CO CO Mn2(CO)10 Halides,like fluorine,also act this way,because they also need only one electron to fill their shell.There are other similarities between transition elements with 7 valence e and halides... XIV-6Mn Mn Dimer-Forming Transition Elements • Given that Mn(CO)5 exists, find its chemical properties: Manganese: [Ar] (4s)2 (3d)5 → 7 valence e- • 5 COʼs provide 10 electrons to Mn, leaving Mn with 17 total e- ; but Mn wants 18 electrons. So, Mn forms a dimer: Mn Mn • Halides, like fluorine, also act this way, because they also need only one electron to fill their shell. There are other similarities between transition elements with 7 valence e- and halides... Mn2(CO)10 CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO XIV-6