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Stability of Fully Filled and Half Filled Orbitals

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Question

Write the electronic configuration of Fe²⁺ ion?

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Solution

$Ground state configuration of Fe is {1s}^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{6} 4 s^{2} W h e n F e a t o m i s o x i d i s e d t o F e^{2 +} b y l o s i n g i t s 2 e l e c t r o n s f r o m 4 s o r b i t a l, t h e c o n f i g u r a t i o n b e c o m e s 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{6} S o, e l e c t r o n i c c o n f i g u r a t i o n o f F e^{2 +} = 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{6}$

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Stability of Fully Filled and Half Filled Orbitals

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