The total number of Mn = O bonds in Mn₂O₇ is ____

In the molecule manganese heptoxide (Mn₂O₇), each manganese (Mn) atom is bonded to four oxygen (O) atoms: three terminal oxygen atoms via double bonds (Mn=O) and one bridging oxygen atom via a single bond (Mn–O–Mn). This results in a total of six Mn=O double bonds and one Mn–O–Mn single bond. Therefore, the total number of Mn=O bonds in Mn₂O₇ is 6.