The second ionisation energy is expected to be highest for element with atomic number:

  1. 22
  2. 24
  3. 25
  4. 30

I had expected the answer to be option 2 because the second electron has to be removed from the stable half filled $\ce{3d}$ configuration. But the answer is option 4.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.