Question

The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing power of the cationic species, K+, Ca2+, Mg2+, Be2+

Solution

Correct option is

K+ < Ca2+ < Mg2+ < Be2+

 

Higher the charge/size ratio, more is the polarizing power.  

∴             K+ < Ca2+ < Mg2+ < Be2+

SIMILAR QUESTIONS

Q1

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

Q2

The set representing the correct order of ionic radius is

Q3

The pair of elements having approximately equal ionisation potential is

Q4

Which is not the correct order for the stated property?

Q5

The correct order of ionisation energy of C, N, O, F is

Q6

The electron affinity values (in kg mol–1) of three halogens XY and Z are respectively –349, –333 and –325. Then XY and Z respectively, are

Q7

Which of the following has the highest second ionisation energy?

Q8

The electronic configuration of the element with maximum electron affinity is

Q9

The first ionisation energy of oxygen is less than that of nitrogen. Which of the following is the correct reason for this observation?

Q10

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?