Question

Arrange the Sr2+, Ca2+, Ba2+ in
order of decreasing polarizing power
Answer
A. Ba2+ < Sr2+ < Ca2+
B. Ba2+ > Sr2+ > Ca2+
c. Sr2+> Ca2+ > Ba2+
D. Ba2+ > Ca2+ > Sr2+​

Answer 1

Given :

       cations  $Sr^2^+, Ca^2^+, Ba^2^+$

Explanation:

Polarizing power is the ability of cation to attract electron cloud to itself.

Polarizing Power =  $\frac{Charge}{Size}$

Polarizing power of  $Sr ^2^+$ is 59

Polarizing power of $Ca^2^+$ is 50

Polarizing power of $Ba^2^+$ is  67.5

∴  Decreasing order is  Ba2+ < Sr2+ < Ca2+

   Option A is correct ans