Question

Which group on the Periodic Table has at least one element in each of the three phases of matter at STP?

Answer 1

Answer: Group 17 (HALOGENS)

Step-by-step explanation:

At STP,

Fluorine & Chlorine are gases

Bromine is a liquid

Iodine, Astatine & Tennessine are solids

Answer 2

Halogens

Step-by-step explanation:

Fluorine and Chlorine are gases at room temperature.

Bromine is a liquid at room temperature.

Tennessine, Iodine, and Astatine are all solids at room temperature.