What is electron configuration of fluoride ion?

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What is electron configuration of fluoride ion?

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Answer 1 · 2016-12-05T05:56:29

#F^- : 1s^2 2s^2 2p^6#

alternatively:
#F^- : [Ne]#

Explanation:

Elemental Fluorine has an electron configuration of #1s^2 2s^2 2p^5# and needs 1 more electron to complete its #2p# orbital which it will acquire in formation of the fluoride ion.

Thus it gains an electron when forming the fluoride ion, and becomes isoelectronic to neon.

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What is electron configuration of fluoride ion?

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