$\mathbf {BaO_2}$ $\mathbf {SiO_2}$ $\mathbf {CH_{3}OH}$ $\mathbf {LiBH_4}$ $\mathbf {HBrO_4}$ $\mathbf {H_{2}NCN}$ $\mathbf {VOCl_3}$ $\mathbf {CO}$

$\mathbf {PuF_{7}^{2-}}$ $\mathbf {BeF_{4}^{2-}}$ $\mathbf {V_{3}^{\phantom{3}}O_{9}^{3-}}$ $\mathbf {S_{2}^{\phantom{2}}O_{5}^{2-}}$ $\mathbf {CrF_{4}O^{-}}$ $\mathbf {UO_{5}^{4-}}$ $\mathbf {Ce_{6}^{\phantom{3}}(OH)_{4}^{\phantom{3}}O_{4}^{12+}}$ $\mathbf {Si_{3}^{\phantom{3}}O_{8}^{4-}}$ $\mathbf {XeO_{6}^{4-}}$

$\mathbf {[Au^{III}Cl_{3}(OH)]^{?}}$ $\mathbf {[Ag^{III}(Te^{VI}O_{6})_{2}]^{?}}$ $\mathbf {[Mo_{6}^{II}Cl_{8}]^{?}}$ $\mathbf {[Ni_{2}^{I}(CN)_{6}]^{?}}$ $\mathbf {[Ni^{0}(CO)_{2}(PF_{3})_{2}]^{?}}$ $\mathbf {[P_{2}^{V}W_{18}^{VI}O_{62}^{\phantom{2}}]^{?}}$ $\mathbf {[Cr_{3}^{III}(CH_{3}COO)_{6}O]^{?}}$ $\mathbf {[Be_{4}^{II}(CH_{3}COO)_{6}O]^{?}}$

$\mathbf {K_{4}[Fe(CN)_{6}]}$ $\mathbf {K[OsO_{3}N]}$ $\mathbf {K_{4}[Ru_{2}Cl_{10}O]}$ $\mathbf {Cs[Au(NO_{3})_{4}]}$ $\mathbf {K_{4}[Ni(CN)_{4}]}$ $\mathbf {CrO(O_{2})_{2}}$ $\mathbf {Na_{2}[Fe(CO)_{4}]}$ $\mathbf {Na[Fe(CO)_{4}]}$ $\mathbf {K_{6}H[Ag(I^{VII}O_{6})_{2}]}$ $\mathbf {K[CrH(CO)_{5}]}$ $\mathbf {K_{4}[U(SCN)_{8}]}$ $\mathbf {[Ni(PF_{3})_{4}]}$ $\mathbf {Na[BH(CH_{3}O)_{3}]}$

$\mathbf {M_{2}O}$ $\mathbf {MO_{4}}$ $\mathbf {MO}$ $\mathbf {M_{2}O_{7}}$ $\mathbf {M_{2}O_{3}}$ $\mathbf {M_{2}O_{5}}$ $\mathbf {MO_{2}}$ $\mathbf {MO_{3}}$

$\mathbf {M(OH)O}$ $\mathbf {MCl_{3}O}$ $\mathbf {MO(S^{VI}O_{4})}$ $\mathbf {MP^{V}O_{4}}$ $\mathbf {MI_{2}^{VII}O_{9}}$ $\mathbf {MSi^{IV}O_{4}}$ $\mathbf {MH_{2}(P_{2}^{V}O_{7})}$

$\mathbf {[M_{2}(OH)_{2}]^{4+}}$ $\mathbf {M_{3}Cl_{2}(OH)_{4}}$ $\mathbf {M_{3}^{\phantom{2}}V_{10}^{V}O_{28}^{\phantom{2}}}$ $\mathbf {[M_{2}(NH_{3})_{10}OH]^{5+}}$ $\mathbf {[M_{6}Cl_{8}]^{4+}}$

$\mathbf{MO_{2}^{-}}$ $\mathbf{MO_{2}^{2-}}$ $\mathbf{MO_{3}^{3-}}$ $\mathbf{MO_{3}^{2-}}$ $\mathbf{MO_{3}^{-}}$ $\mathbf{MO_{4}^{4-}}$ $\mathbf{MO_{4}^{3-}}$ $\mathbf{MO_{4}^{2-}}$ $\mathbf{MO_{4}^{-}}$ $\mathbf{MO_{6}^{4-}}$

$\mathbf{MF_{4}^{-}}$ $\mathbf{MF_{5}^{2-}}$ $\mathbf{MF_{6}^{-}}$ $\mathbf{MF_{8}^{4-}}$ $\mathbf{MF_{7}^{2-}}$

$\mathbf{M_{2}^{\phantom{2}}O_{5}^{2-}}$ $\mathbf{M_{2}^{\phantom{2}}O_{7}^{2-}}$ $\mathbf{M_{2}^{\phantom{2}}O_{7}^{4-}}$ $\mathbf{M_{3}^{\phantom{2}}O_{10}^{2-}}$ $\mathbf{M_{3}^{\phantom{2}}O_{9}^{3-}}$ $\mathbf{M_{3}^{\phantom{2}}O_{6}^{3-}}$ $\mathbf{M_{3}^{\phantom{2}}O_{8}^{4-}}$ $\mathbf{M_{6}^{\phantom{2}}O_{18}^{12-}}$

$\mathbf {HMO}$ $\mathbf {HMO_{2}}$ $\mathbf {HMO_{3}}$ $\mathbf {HMO_{4}}$ $\mathbf {H_{2}MO_{2}}$ $\mathbf {H_{2}MO_{3}}$ $\mathbf {H_{2}MO_{4}}$ $\mathbf {H_{3}MO_{3}}$ $\mathbf {H_{3}MO_{4}}$ $\mathbf {H_{3}MO_{5}}$ $\mathbf {H_{4}MO_{3}}$ $\mathbf {H_{4}MO_{4}}$ $\mathbf {H_{4}MO_{5}}$ $\mathbf {H_{4}MO_{6}}$

$\mathbf {H_{2}M_{2}O_{2}}$ $\mathbf {H_{2}M_{2}O_{4}}$ $\mathbf {H_{2}M_{2}O_{5}}$ $\mathbf {H_{2}M_{2}O_{7}}$ $\mathbf {H_{4}M_{2}O_{9}}$ $\mathbf {H_{4}M_{2}O_{7}}$ $\mathbf {HM_{3}O_{8}}$ $\mathbf {HM_{5}O_{8}}$ $\mathbf {H_{4}M_{4}O_{12}}$ $\mathbf {H_{4}M_{6}O_{11}}$