

MCQOPTIONS
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1. |
The number of unpaired electrons in \[1{{s}^{2}},\,2{{s}^{2}}2{{p}^{4}}\] is [NCERT 1984; CPMT 1991; MP PMT 1996, 2002] |
A. | 4 |
B. | 2 |
C. | 0 |
D. | 1 |
Answer» C. 0 | |