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1. |
Krypton \[{{(}_{36}}Kr)\] has the electronic configuration \[{{(}_{18}}Ar)\] \[4{{s}^{2}},3{{d}^{10}},4{{p}^{6}}\]. The \[{{37}^{th}}\] electron will go into which one of the following sub-levels [CBSE PMT 1989; CPMT 1989; EAMCET 1991] |
A. | \[4f\] |
B. | \[4d\] |
C. | \[3p\] |
D. | \[5s\] |
Answer» E. | |