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Q.

The atomic ratio of Na,S and O in an inorganic compound is 1.26:1.26:1.89.If the formula mass of the compound is 158u then atomicity of the compound is

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a

7

b

6

c

4

d

12

answer is A.

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Detailed Solution

Simplest atomic ratio

Na:S:O =1.26/1.26:1.26/1.26:1.89/1.26

=1:1:1.5 = 2:2:3

Compound = Na2S2O3

Atomicity = 7

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