Question

1. Show the electronic configuration of iron. (Fe → 26) .



2. Why it can't be 2 , 8 , 15 , 1 ?

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• NO COPY AND PASTE
• NEED EXPLANATION

Thanks in Advance !


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Answer 1

Answer:

the electronic configuration of Fe would be... 2,8,14,2

Explanation:

in order to make the valence or the last shell of the element stable..

we use 2 electrons to make it stable by duplet rule in the last shell... that's why we write the configuration as 2,8,14,2 instead of 2,8,15,1 which would make the element seem unstable.