A neutral fluorine atom has seven valence electrons. You have the right to determine the number of valence electron for any kind of element that the main team of facets by utilizing their group numbers. The main group is composed of all of the aspects EXCEPT the change and inner change elements. The number of valence electrons because that the key group aspects can be figured out by their team numbers as follows:

Group 1/IA: 1 valence electron

Group 2/IIA: 2 valence electrons

Group 13/IIIA: 3 valence electrons

Group 14/IVA: 4 valence electrons

Group 15/VA: 5 valence electrons

Group 16/VIA: 6 valence electrons

Group 17/VIIA: 7 valence electrons (of i beg your pardon fluorine is a member)

Group 18/VIIIA: 8 valence electrons (except helium, which has 2 valence electrons)


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Shivangi Mangotra · Christopher P.
Oct 28, 2014

Fluorine has actually 7 Valence electrons.

You are watching: How many electron shells does fluorine have

Valence electrons space those electrons which are present in the outermost shell of one atom.

Fluorine has atomic number 9. Atomic number is the variety of protons present in the cell core of an atom.

In every steady (Neutral) atom the number of electrons are equal come the variety of protons.

Therefore, the variety of electrons in an atom of fluorine space 9.

The digital configuration the fluorine is:

E.C:- k - 2 , L-7

The last shell of fluorine has 7 electrons. Thus there are 7 valence electrons in an atom that fluorine.


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Stefan V.
Sep 9, 2015

Fluorine has #7# valence electrons.


Explanation:

Fluorine is situated in group 17, duration 2 that the periodic table, and has an atom number same to 9.

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This method that a neutral fluorine atom has actually a complete of 9 electrons surrounding its nucleus.

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Bu how numerous of those 9 electrons are valence electrons?

You know that valence electron are located in the outermost shell of one atom. You can use fluorine"s electron configuration to aid you determine how many electrons are located in the outermost shell

#"F": 1s^2 2s^2 2p^5#

The very first energy level has 2 electrons situated in the 1s-orbital and the 2nd energy level, i m sorry in fluorine"s instance is the outermost energy level, has 7 electrons, 2 in the 2s-orbital and 5 in the 2p-orbitals.

This method that fluorine has a total of 7 valence electrons.


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