MCQ
Energy of orbit
- ✓Increases as we move away from nucleus
- BDecreases as we move away from nucleus
- CRemains same as we move away from nucleus
- DNone of these
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When attached to $sp^3$ -hybridized carbon, their leaving group ability in nucleophilic substitution reaction decreases in the order

(Atomic no. : $B = 5,S = 16,Ni = 28,Xe = 54$)
