S Block Elements Question 74

Question: The decreasing order of the second ionization potentials of K, Ca and Ba is

Options:

A) K>Ca>Ba

B) Ca>Ba>K

C) Ba>K>Ca

D) K>Ba>Ca

Show Answer

Answer:

Correct Answer: A

Solution:

[a] $ {{K}^{+}}>C{{a}^{+}}>B{{a}^{+}} $ (IE decreases down the group)