The decreasing order of the second ionization potentials of K, Ca and

1.	The decreasing order of the second ionization potentials of K, Ca and Ba is
A.	K>Ca>Ba
B.	Ca>Ba>K
C.	Ba>K>Ca
D.	K>Ba>Ca
Answer» B. Ca>Ba>K

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

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