Question

и
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18. Complete the following statements by selecting this
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) AlO3 (ii) A1O2 (iii) Al2O3 (iv) A1302

(c) The valency of nitrogen in nitrogen dioxide (NO2) is
(i) one
(ii) two
(iii) three
(iiii) four.



please tell me the correct answer



it is too urgent i want an answers now only now​

Answer 1

Answer:

c

d

a........

Explanation:

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