[Co(CN)₆] ³⁻ < [Co(NH₃)₆]³⁺ < [Co(NH₃)₅(H₂O)]³⁺ < [Co(NH₃)₅(Cl)]²⁺

[Co(NH₃)₅(Cl)]²⁺ < [Co(NH₃)₅(H₂O)]³⁺ < [Co(NH₃)₆]³⁺ < [Co(CN)₆]³⁻

[Co(CN)₆]³⁻ < [Co(NH₃)₅(Cl)]²⁺ < [Co(NH₃)₅(H₂O)]³⁺ < [Co(NH₃)₆]³⁺

[Co(NH₃)₆]³⁺ < [Co(CN)₆]³⁻ < [Co(NH₃)₅(Cl)]²⁺ < [Co(NH₃)₅(H₂O)]³⁺

I₂

IO₃⁻

IO₄⁻

IO₂⁻

Bond order of Ne₂ is zero.

The highest occupied molecular orbital (HOMO) of F₂ is $\sigma$-type.

Bond energy of $O_2^{+}$ is smaller than the bond energy of O₂.

Bond length of Li₂ is larger than the bond length of B₂.