atomic size of Cs >Li in gas or solid state but in aqueous solution the size of Li>Cs?
Dear student
Please find the solution to the asked query:
On moving down the alkali group, the ionic and atomic sizes of the metals increase. The given alkali metal ions can be arranged in the increasing order of their ionic sizes as:
Li < Na < K < Rb < Cs , thus Cs>Li
Again,
Smaller the size of an ion, the more highly is it hydrated. Since Li + is the smallest, it gets heavily hydrated in an aqueous solution. On the other hand, Cs + is the largest and so it is the least hydrated. So aqueous Li ion looks bigger than the Cs ion, So Li>Cs in aqueous solution.
Hope this information will clear your doubts regarding the topic. If you have any other doubts please ask here on the forum and our experts will try to solve them as soon as possible.
Regards
Please find the solution to the asked query:
On moving down the alkali group, the ionic and atomic sizes of the metals increase. The given alkali metal ions can be arranged in the increasing order of their ionic sizes as:
Li < Na < K < Rb < Cs , thus Cs>Li
Again,
Smaller the size of an ion, the more highly is it hydrated. Since Li + is the smallest, it gets heavily hydrated in an aqueous solution. On the other hand, Cs + is the largest and so it is the least hydrated. So aqueous Li ion looks bigger than the Cs ion, So Li>Cs in aqueous solution.
Hope this information will clear your doubts regarding the topic. If you have any other doubts please ask here on the forum and our experts will try to solve them as soon as possible.
Regards