Question

Which material from the table is a liquid at 50°C and a gas at 300°C? a iodine b rubidium c phosphorus d potassium

Answer 1

um b

Answer 2

I don't see a table but I looked up the melting and boiling points of each element listed on the web. You can do the same. I think Rb is the answer but you should confirm that by looking up the values yourself just in case I didn't read the tables right OR perhaps I made a typo. I'm good at that.