Multiple choice general knowledge science & technology Hafnium H Hf Hm Hn Reveal answer Fill a bubble to check yourself B Correct answer Explanation Hafnium's symbol is Hf, combining H with the following consonant 'f'. H is hydrogen, Hm is not a valid symbol, and Hn doesn't exist. Hafnium is a transition metal named after Hafnia, the Latin name for Copenhagen.