Question
Chemistry Question on Electronic Configurations Of Elements And The Periodic Table
Outermost electronic configurations of four elements A,B,C,D are given below:
(A) 3s2 (B) s23p1 (C) 3s23p3 (D) 3s23p4
The correct order of fist ionization enthalpy for them is:
A
(A)< (B)< (C) < (D)
B
(B)< (A)< (D)< (C)
C
(B) <(D)< (A)< (C)
D
(B)< (A)< (C) < (D)
Answer
(B)< (A)< (D)< (C)
Explanation
Solution
The correct answer is (B): (B)< (A)< (D)< (C)
Orbitals with fully filled and half-filled electronic configuration are stable, and require more energy for ionization
Elements with greater electronegativity require more energy for ionisation