what is the first row transition metal with the most unpaired electrons?

NetherCraft 0

3 Answers

  • The first row of transition metals is Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn. The d shell holds 10 electrons, which are filled sequentially. That is:

    Sc has 1 unpaired electron

    Ti has 2 unpaired electrons

    V has 3 unpaired electrons

    Cr has 4 unpaired electrons

    Mn has 5 unpaired electrons

    Fe has 1 set of paired electrons and 4 unpaired electrons

    Co has 2 sets of paired electrons and 3 unpaired electrons

    …and so on until the d shell is filled with Zn (5 sets of paired electrons)

    Therefore, your answer is Mn, with 5 unpaired electrons.

  • First Row Transition Metals

  • Joe is wrong. Although they do fill sequentially most of the time the electron configuration for Cr is [Ar] 4s1 3d5 not [Ar] 4s2 3d4 like expected. Therefore, Cr has the most unpaired electrons of the transition metal series with 6 unpaired electrons.

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