Question

Which element is a metalloid? Check all that apply. selenium (Se) polonium (Po) silicon (Si) iodine (I) tin (Sn) antimony (Sb) phosphorus (P)

Answer 1

Answer: Polonium (Po), Silicon (Si), Antimony(Sb)

Explanation: Metalloids are the elements which exhibits some properties of both metals and non-metals. They are generally called as semi-metal. There are in total 7 metalloids in whole periodic table. They are:

Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Telurium (Te) and Polonium (Po).

From, the list and periodic table attached, it is visible that only Silicon, Polonium and antimony are the metalloids from the elements given.

Answer 2

The metalloids are highlighted in the table.

Of the elements in the question, the following are metalloids...

antimony (Sb)
silicon (Si)
polonium (Po)