For large infoboxes this can result in dirty diffs. It is particularly confusing when the parameters are all on one line.
This was a conscious decision. I think this is acceptable in that over time, transclusions get normalized to reflect templatedata order over time. Trying to prevent dirty diffs here is a bit more complexity than seems necessary. Unless there is a clear need for this, I am going to let this be.
The ones being moved to the bottom are not defined parameters, so those seemingly should follow (or be dropped altogether?).
| C = 16 | H = 32 |O=2 | mobilitEelectronique = |Xi |R36 |S26
and mobilitEelectronique has the wrong capitalization, it should be mobiliteElectronique, but maybe the comparison should be lowercased.