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Q.

On analysis, a certain compound was found to contain iodine and oxygen in the ratio of 254 g of iodine and 80 g 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 ?

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a

IO

b

I2O

c

I5O2

d

I2O5

answer is D.

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Detailed Solution

Compound has 254 g of I2 means 254127=2 moles, while 80 g O2 means 8016=5 moles so they will form compound I2O5.
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