Multiple choice

The ionisation energy will be maximum for the process

  1. Ba →Ba++

  2. Be→ Be++

  3. Cs →Cs+

  4. Li →Li+
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The ionisation energy increases from left to right along a period and decreases from top to bottom along a group. Further, ionisation energy of an element with half filled or completely filled orbitals is higher, The second ionization energy is always more than the first ionisation energy. Considering all these points we can conclude that ionization energy of Be2+ is the maximum

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