7 of 10
The electronic configuration of an element Ais 2, 8, 2 and that of Bis 2, 8, 7. Which of the following statements are correct about A and B?
I. B is a metal and A is a non-metal
II. If A reacts with B, the formula of the compound formed is AB
III. If A reacts with B, the formula of the compound is ABz
IV. A, is a reducing agent whereas Bis an oxidising agent