Instructions 20Q Game: These are similar to full games, but for quizzes larger than 20 questions it will randomly select 20 questions from within the set. This is a quick way to get in some studying of a topic.     
What element, atomic number 41, takes its name from the daughter of king Tantalus from Greek mythology?
Astatine (At)
Sulfur (S)
Yttrium (Y)
Niobium (Nb)