Question

The set representing the correct order of ionic radius is

Solution

Correct option is

Na+ > Li+ > Mg2+ > Be2+

 

The ionic radius generally increases on moving top to bottom and further decreases on moving from left to right in the Periodic Table.

So the correct order is  

                      

                  0.88Ã…        0.68Ã…       0.65Ã…   

SIMILAR QUESTIONS

Q1

The Ist IEs of four consecutive elements present in the second period of Periodic Table are 8.3, 11.3, 14.5 and 13.6 eV respectively. Which of these is the IE of nitrogen?   

Q2

Which of the following transition involves maximum amount of energy?

Q3

 

The formation of the oxide ion O2–(g) requires first an exothermic and then an endothermic step as shown below  

               

                    

This is because 

Q4

The electronic configuration of four elements are given below. Which element does not belong to the same family?

Q5

The least stable ion among the following is

Q6

Ist and IInd IE of Mg are 7.646 and 15.035 eV respectively. The amount of energy needed to convert all the atoms of magnesium into Mg2+ ions present in 12 mg of magnesium vapours is [Given, 1 eV = 96.5 kJ mol–1]

Q7

Which of the following is the most electropositive element?

Q8

Which of the following sequence correctly represents the decreasing acidic nature of oxides?

Q9

Which of the following pairs of species have nearly same size?

Q10

The pair of elements having approximately equal ionisation potential is