Question

which lists only metalloids?
arsenic (as), sulfur (s), and polonium (po)
antimony (sb), tellurium (te), and gallium (ga)
boron (b), germanium (ge), and tellurium (te)
polonium (po), aluminum (al), and silicon (si)

Explanation:

Metalloids have properties intermediate between metals and non - metals. Boron (B), germanium (Ge), and tellurium (Te) are well - known metalloids.

• Arsenic (As) is a metalloid, but sulfur (S) is a non - metal and polonium (Po) is a metal.
• Antimony (Sb) is a metalloid, but tellurium (Te) is a metalloid and gallium (Ga) is a metal.
• Polonium (Po) is a metal, aluminum (Al) is a metal and silicon (Si) is a metalloid.

Answer:

Boron (B), germanium (Ge), and tellurium (Te)