MCQ
Which of the following has maximum difference in 1st and 2nd ionisation enthalpy.
- A1s2, 2s2, 2p6, 3s1
- B1s2, 2s2, 2p6, 3s1
- C1s2, 2s2, 2p1
- D1s2, 2s2, 2p6
✓
Answer
- 1s2, 2s2, 2p6, 3s1
Explantion:
After losing one electron, it acquires stable electronic configuration, that is why second ionisation enthalpy is very high.
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