19 How many unpaired electrons are there in the complex ion [Mn(CN)₆]³⁻?(A)0(B)1(C)2(D)3(E)4

22 Why is the bond dissociation energy of C-C greater than that of C-H?(A)due to enhanced sigma bond overlap.(B)because the bond is electrostatically stronger.(C)because multiple bonds are always stronger than single bonds.(D)due to the decreased bond dipole.(E)It is not; the dissociation energy is greater for C-H.