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Why \text{Li}^{+} are eluted first in a cation exchange column including other alkali metal ions?

Option: 1

Because of small size of \text{Li}^{+} ion.


Option: 2

Because of large size of \text{Li}^{+} ion.


Option: 3

Because of large hydration sphere of \text{Li}^{+}.


Option: 4

Because of small hydration sphere of \text{Li}^{+}.


Answers (1)

best_answer

Due to large hydration sphere \text{Li}^{+} has its charge shielded and do not get attached to the cation exchange column very tightly and falls off first.

 

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