Which ion has the largest radius se2- f o2- rb
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Answer:
The answer is "Rubidium Rb+".
Explanation:
While moving from left to right in periodic table the nuclear attraction between nucleus and electrons increases and the size decreases.
While moving down the group as the number of shells increases the radius increases.
Rb+ belongs to first group and fall in 5th period.
O-2 and F- are placed in the second period of the periodic table.
Se-2 belongs to 4th period and 16th group of the periodic table.
Following is the order of increase of radius of ions.
F- < O-2 < Se-2 < Re+
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