Question

which element is not a liquid

Answer 1

Elemental hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), and chlorine (Cl, element 17) are all gases at room temperature, and are found as diatomic molecules (H2, N2, O2, F2, Cl2).

Answer 2

there are more than 118 elements.. so we cannot classify which is liquid or solid.. some may be liquid in room temperature like mercury..