Why are so few elements liquid at room temperature?

Question

Many elements are gas or solids at room temperature, but only mercury and bromine are liquid. Why?

In: 1

Answer 1

And gallium if it’s a warm room, m. pt. 29.8 °C

There’s only a handful of gaseous ones too, H, He, N, O, F, Cl , Ne, Ar, Kr, Xe, Rn. The vast majority of elements are solid at 20 °C