MCQ
Which has the highest second ionisation potential
- ANitrogen
- BCarbon
- ✓Oxygen
- DFluorine
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$(i)$ $n\, = 4, l\, = 1$ $(ii)$ $n\, = 4, l\, = 0$
$(iii)$ $n\, = 3, l\, = 2$ $(iv)$ $n\, = 3, l\, = 1$
The sequence representing increasing order of energy, is