The electronic configuration of some neutral atoms are given below (1

1.	The electronic configuration of some neutral atoms are given below (1) 1s2 2s1 (2)1s2 2s2 2p3 (3)1s22s22p5 (4)1s22s22p63s1In which of these configuration would you expect to have highest :-(a) IE1 (b) IE2(A) 3,1. (B) 2,1. (C) 3,2. (D) 2,4
Answer» Since for electronic configuration or we can say to fill the electrons in different shells its necessary to fill a shell then move to next shell ,without doing so we can't jump to other .But in case of copper and chromium this kind of electronic configuration is followed as for stability either the orbital should be half filled or full filled. Energy gap between the 2s and 2 p is large so when we are going to fill the electrons , the 2s will be filled prior to the 2p. The electron will enter only after the completion of 2s.

The electronic configuration of some neutral atoms are given below (1) 1s2 2s1 (2)1s2 2s2 2p3 (3)1s22s22p5 (4)1s22s22p63s1In which of these configuration would you expect to have highest :-(a) IE1 (b) IE2(A) 3,1. (B) 2,1. (C) 3,2. (D) 2,4

Answer»

Since for electronic configuration or we can say to fill the electrons in different shells its necessary to fill a shell then move to next shell ,without doing so we can't jump to other .But in case of copper and chromium this kind of electronic configuration is followed as for stability either the orbital should be half filled or full filled.

Energy gap between the 2s and 2 p is large so when we are going to fill the electrons , the 2s will be filled prior to the 2p. The electron will enter only after the completion of 2s.

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