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 56, a member of the alkaline earth metals, takes its name from Greek 'heavy'?
Neptunium (Np)
Osmium (Os)
Barium (Ba)
Lawrencium (Lr)