A neutral fluorine atom has actually seven valence electrons. You have the right to determine the number of valence electron for any element that the main group of aspects by using their team numbers. The main group consists of all of the elements EXCEPT the shift and inner change elements. The number of valence electrons for the main group elements can be established 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 electron (of i beg your pardon fluorine is a member)

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

Shivangi Mangotra · Christopher P.
Oct 28, 2014

Fluorine has actually 7 Valence electrons.

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Valence electrons are those electron which are existing in the outermost shell of one atom.

Fluorine has actually atomic number 9. Atom number is the number of protons existing in the cell nucleus of an atom.

In every secure (Neutral) atom the number of electrons room equal to the number of protons.

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

The digital configuration the fluorine is:

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

The last shell of fluorine has actually 7 electrons. Therefore there space 7 valence electrons in one atom of fluorine.

Stefan V.
Sep 9, 2015

Fluorine has actually #7# valence electrons.

Explanation:

Fluorine is located in team 17, duration 2 that the routine table, and also has an atom number equal to 9.

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This way that a neutral fluorine atom has a total of 9 electrons neighboring its nucleus.

Bu how many of those 9 electrons are valence electrons?

You know that valence electron are located in the outermost shell of one atom. You deserve to use fluorine"s electron construction to aid you identify how countless electrons are situated 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 also the second energy level, i m sorry in fluorine"s case is the outermost power level, has actually 7 electrons, 2 in the 2s-orbital and 5 in the 2p-orbitals.

This way that fluorine has actually a total of 7 valence electrons.