FIRST Jeopardy 2.0! (12/7)

I decided to turn this into a little impromptu theme week about the elements. So, for 200, at room tempurature, this is the densest of all liquid elements. Remember to PM me your answer in the form of a question within 50 minutes.

12/7

So, for 200, at room temperature, this is the densest of all liquid elements.

What is Mercury?

Dorienne Plait (200), tkwetzel (32)