Question

question 4 of 25 thermal windows often have all the air pumped out between the panes and a gas pumped in that is not harmful and wont react with other things. what gas would be used? a. ar b. n c. cl d. o

Explanation:

Argon (Ar) is an inert gas, non - harmful and unreactive under normal conditions. Nitrogen (N) in its elemental form is usually $N_2$ and is not typically the single - atom form shown. Chlorine (Cl) is a reactive and harmful gas. Oxygen (O) is reactive. In thermal windows, argon is commonly used.

Answer:

A. Ar