Question

Write the electronic configuration of fe3+ and Cu2+, which of the two ions is more stable and why?

Answer 1

Answer:

ELECTRONIC CONFIGURATION OF

CU²+ ---- 1S² 2S² 2P6 3S2 3P6 4S2 3D7

OR

2,8,15,2

Fe³+ ----- 1S² 2S² 2P6 3S2 3P6 4S1 3D5

OR

2,8,13,1

Explanation:

Fe³+ is more stable since its last orbit electron is half filled as half filled and full filled d block are more stable.

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