What element has the symbol 'Ho'?

The symbol Ho stands for Holmium, element 67 on the periodic table. Hydrogen is H, Hafnium is Hf, and “Holmium-227” refers to a specific isotope, not the element’s name, so the correct match for Ho is simply Holmium. Holmium is a lanthanide (rare earth) discovered in 1879 and named after Stockholm (Holmia in Latin). It has one of the highest magnetic moments of any element and is used in powerful magnets and certain lasers. Memory tip: Think “Ho = Holmium = Holmia (Stockholm)” or “Ho-ho-Holmium” to lock the symbol-name pair.