1.n(MnS)

In order to determine the molecular formula of MnS, we need to know the valence charges of each element in the compound.

Manganese (Mn) is a transition metal with various possible oxidation states. In this case, Mn is most likely in a +2 oxidation state, as it commonly forms compounds with a 2+ charge.

Sulfur (S) typically has an oxidation state of -2, as it tends to gain two electrons to complete its valence shell.

To find the molecular formula of MnS, we need to determine the ratio between Mn and S in order to balance the overall charge of the compound.

Since Mn has a 2+ charge and S has a 2- charge, we need one Mn(2+) ion to balance one S(2-) ion. Therefore, the molecular formula of MnS is simply MnS.