What do you mean by radicals?give three examples with valencies .

The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Answer explain why it is not possible to deduce a complete order of reactivity.