True or false & what letter do i circle?

3. True

4.

a. solid non-metals are brittle

b. They have usually lower densities than metals

Explanation:

Non metals are mostly gases. Out of the 17 non-metals, 11 are gases in room temperature. Bromine is the only non-metal that is liquid at room temperature, and the last 5 are solids.

They have lower densities than metals but their densities vary. Solid non-metals are charaterized as brittle.

The last two options are properties of metals, and non-metals show opposite properties, meaning they lack luster (are not shiny) and are poor cnductors of heat and electricity, which is why they are often used as insulators.

your answer would b. the missisipi river

hope i you : )

quote is the answer your looking for.