Question

question 1
which elements in group 7a are gases under normal conditions?
i
f
at
br
cl

Explanation:

Group 7A elements are halogens. Under normal conditions (room temperature and pressure), fluorine (F) and chlorine (Cl) are gases. Iodine (I) is a solid, bromine (Br) is a liquid, and astatine (At) is a solid (and also radioactive). So we identify the gaseous halogens in group 7A from the options.

Answer:

F. F, Cl. Cl