how would you say in words LiMnO2 ?

would lithium manganese oxide be correct?

Yes, "lithium manganese oxide" would be the correct way to say LiMnO2 using words.

To understand how to name such compounds, it helps to know a little bit about chemical nomenclature.

In this case, LiMnO2 is an ionic compound made up of three elements: lithium (Li), manganese (Mn), and oxygen (O). When naming compounds like this, the name of the positive ion (the cation) usually comes first, followed by the name of the negative ion (the anion).

So, for LiMnO2, "lithium" is the name of the positive ion (Li+), "manganese" is the name of the negative ion (MnO2-), and "oxide" is the name of the overall compound.

Therefore, "lithium manganese oxide" accurately represents the composition of LiMnO2 in words.