Consider the Compounds

Consider the compounds
PCl₅(g) ,HCN(g) ,CuO(s) ,NO(g) ,NH₃(g) ,and SO₂(g) .
Which compound will have approximately the same stability with respect to its elements if the temperature is raised?

A) CuO(s)
B) NO(g)
C) PCl₅(g)
D) HCN(g)
E) NH₃(g)