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Q.

Among the following correct basic strength order is
i) La(OH)3 
ii) Ce(OH)3 
iii) Lu(OH)3

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a

i > ii > iii

b

iii > ii > i

c

i > iii > ii

d

iii > i > ii 

answer is A.

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Detailed Solution

1 – From La(OH)3 to Lu(OH)3, as size of the cation decreases basic nature of hydroxide decreases

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