Question

Complete the following statements by selecting the
correct option:
(a) The formula of a compound represents
(i) an atom (ii) a particle
(iii) a molecule (iv) a combination.
(b) The correct formula of aluminium oxide is
(i) A103 (ii) A102 (iii) Al 03 (iv) A1302
(c) The valency of nitrogen in nitrogen dioxide (NO2) is
(i) one
(ii) two
(iii) three
(iv) four.​

Answer 1

Answer:

b iii

c 4

Explanation:

(b)iii because Al2O3