FIRST Jeopardy 2.0! (12/9)

We’re still going with elements. For 400, the elements that lie on the metal/non-metal border (that staircase you see on the periodic table) are called these. Remember to PM me your answer in the form of a question within 50 minutes.

12/9

For 400, the elements that lie on the metal/non-metal border (that staircase you see on the periodic table) are called these.

What are metalloids?