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in Chemistry by (87.4k points)

Consider the following abbreviations for hydrated alkali metal ions: 

X = [Li(H2O)n]+ ; Y = [K(H2O)n]+ ; Z = [Cs(H2O)n]

Which is the correct order of conductance of hydrated alkali metal ions?

a. X > Y > Z 

b. Z > Y > X 

c. X = Y = Z 

d. Z > X > Y 

1 Answer

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Best answer

Correct option  (b) Z > Y > X

Explanation:

Smaller cation, will have more ionic conductance. Size of hydrated ion decreases from Li+ to Cs+, so conductance increases.

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