MCQ
Magnetic moment is expressed in
- AFaraday
- BCalorie
- ✓Bohr Magneton
- DDebye
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$R - Br + C{l^ - }\xrightarrow{{DMF}}R - Cl + B{r^ - }$ ,
which one of the following undergoes complete inversion of configuration?

| Expt. No. | $(A)$ | $(B)$ | Initial Rate |
| $1$ | $0.012$ | $0.035$ | $0.10$ |
| $2$ | $0.024$ | $0.070$ | $0.80$ |
| $3$ |
$0.024$ |
$0.035$ | $0.10$ |
| $4$ | $0.012$ | $0.070$ | $0.80$ |