Classification Of Elements And Periodicity In Properties Ques 262
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}^{+}},C{{a}^{2+}},M{{g}^{2+}} $ and $ B{{e}^{2+}} $ -
Options:
A) $ M{{g}^{2+}} $ < $ B{{e}^{2+}} $ < $ {{K}^{+}} $ < $ C{{a}^{2+}} $
B) $ B{{e}^{2+}} $ < $ {{K}^{+}} $ < $ C{{a}^{2+}} $ < $ M{{g}^{2+}} $
C) $ {{K}^{+}} $ < $ C{{a}^{2+}} $ < $ M{{g}^{2+}} $ < $ B{{e}^{2+}} $
D) $ C{{a}^{2+}} $ < $ M{{g}^{2+}} $ < $ B{{e}^{2+}} $ < $ {{K}^{+}} $
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Higher the charge/size ratio, larger is the polarizing power.
$ \therefore {{K}^{+}}<C{{a}^{2+}}<M{{g}^{2+}}<B{{e}^{2+}} $
