How to spell FRANCIOUM correctly?

If you're referring to the misspelling "francioum", it may actually be the element "francium" you meant to write. Francium is a highly radioactive alkali metal that exhibits unique properties. However, if it was a different word you intended, perhaps consider options like "francium", "francium-ion" or "francium conjugate". Proofreading is always helpful to ensure accuracy.