Question

On analysis, a certain compound was found to contain iodine and oxygen in the ratio of 254 gm of iodine and 80 gm of oxygen. The atomic mass of iodine is 127 and that of oxygen is 16. Which of the following is the formula of the compound? 

(a) IO

(b) I₂O

(c) I₅O₂

(d) I₂O₅

Answer 1

Correct option is (d) I₂O₅

Mole atoms of iodine = \(\frac {254}{127}\) = 2

Mole atoms of oxygen = \(\frac{80}{16}\) = 5