The electronic configuration of elements A,B and C are [He]2s1 ,[Ne]3s1 and [Ar]4s1 respectively .Which one of the following order is correct for IE1(in kJmol−1) of A,B and C ?
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a
A > B > C
b
C > B > A
c
B > C > A
d
C > A > B
answer is A.
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Detailed Solution
Ionization enthalpy decreases on moving top to bottom in a group
The electronic configuration of elements A,B and C are [He]2s1 ,[Ne]3s1 and [Ar]4s1 respectively .Which one of the following order is correct for IE1(in kJmol−1) of A,B and C ?