Which formula contains two non-metals?

BaO

KI

NaBr

SiO2

SiO2

Explanation:

Non-metals are elements that react by gaining electron (s) to attain a stable configuration and form an anion. Unlike metals, non-metals are characterized by being poor conductors of heat and electricity. In this case, the formula that contains non-metals is SiO2, it contains silicon and oxygen which are both non-metals. The other choices contain a metal and a non-metal BaO - Contains Barium metal and Non-metal, Oxygen KI - Contains potassium metal and Non-metal, iodine NaBr - Contains sodium metal and non-metal, Bromine