Which Of The Following Has The Highest Second Ionisation Energy?

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Question

Which of the following has the highest second ionisation energy?

Solution

Correct option is

Chromium

 

Cr(24) = [Ar]18 3d5, 4s1

Chromium after losing one electron gain stable configuration due to the presence of half-filled d-orbitals, therefore its second ionisation enthalpy is highest. 

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SIMILAR QUESTIONS

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Q10

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