Respuesta :
Hello,
Your answer would be A, Rubidium.
All common cations are smaller than all common anions except rubidium.
Glad to help.
-Twizzers :D
Your answer would be A, Rubidium.
All common cations are smaller than all common anions except rubidium.
Glad to help.
-Twizzers :D
Answer: Option (a) is the correct answer.
Explanation:
It is known that sodium and rubidium are same group elements, that is, they are group 1 elements. Whereas calcium and magnesium both belongs to group 2.
Hence, when we move down the group the size of atom increases.
Rubidium is at the bottom of group 1, therefore, it is the largest cation out of the given options.
