Fluorine, achemical element with the price F and atomic number 9, is the lightest halogenand exist as a very toxic diatomic gas with a pale yellow appearance at regular pressureand temperature. Fluorine is the most reactive chemical facet with thehighest electronegativity value of 3.98 according to the Pauli scale so the itcan react through all other aspects except helium, neon, and argon.

You are watching: How many valence electrons does a fluorine atom ( f) have?

Elemental fluorineand mostly all the fluorine link are created from hydrogen fluoride (HF).It is widely provided as refrigerant gas (ferons), manufacturing of polymers(fluoropolymers, PTFE), surfactants, agrichemical, and also in numerous other applications.

You are here toknow valence electrons of fluorine atom, aren’t you? Don’t worry along with fluorinevalence electrons we will describe its valency also. But before that let’s havesome basic ideas around what these 2 terms are:

Difference BetweenValence Electrons and also Valency

Valence electronsare the total variety of electrons existing in the outermost shell of one atom(i.e. In outermost orbital). The valence electrons because that a neutral atom arealways definite, it can not be varied (more or less) in any condition because that aparticular atom and may or might not be same to that is valency.


Valency is definedas the total number of electrons, one atom have the right to lose, gain, or share in ~ the timeof bond formation to get a stable digital configuration i.e. To complete anoctet. The valency of one atom have the right to be variable in various compounds orchemical reactions due to the different bonding circumstances. Most of the timevalency varies/changes early to adjust in oxidation and reduction states.

Fluorine (F)Valence Electrons

There space foursimple steps to uncover out the valence electrons because that fluorine atom i m sorry are:

Step 1: discover theAtomic Number


To uncover out theatomic number of fluorine, we deserve to use the periodic table. Through the help of theperiodic table, us can easily see the the atomic variety of fluorine is 9. Asits atom number is 9, it has 9 protons, and for neutral fluorine, the numberof proton is constantly equal to the variety of electrons i.e. Has actually 9 electrons inits nucleus.

Step 2: WriteElectron Configuration


Electronconfiguration is the arrangement of electron on the orbitals. The fluorineatom has actually a total of 9 electrons so, we have to put 9 electron in orbitals. Theelectrons will be placed in various orbitals follow to the power level:<1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f>. Now,

Fluorine electronconfiguration F (9) =1s22s22p5(completeconfiguration).

= 2s22p5(condensed configuration).

Step 3: DetermineValence Shell

As us know, thevalence covering of an atom have the right to be discovered from the highest number of principlequantum number which space expressed in the term of n, and also in 2s22p5, thehighest value of n is 2 so the the valence covering of fluorine is2s22p5.

Step 4: FindValence Electrons

The full number ofelectrons present in the valence shell of one atom is dubbed valence electrons,and there are a full of 7 electrons current in the valence covering of fluorine(2s22p5). Thus,fluorine has seven valence electrons.

Also Read:

Valency of Fluorine(F)

There room manydifferent methods to find out the valency of one atom which mirrors the capability ofan atom come bond with other atoms. Valence describes how easily an atom or afree radical can combine with various other chemical species. The valency of one atom isdetermined based upon the variety of electrons lost, gained, or common withanother atom at the moment of bond formation.

An atom is claimed tobe stable when its outermost shells have actually eight electrons (except H & He).If the total number of electrons in outermost shells is in between one to four,the atom has positive valency and also if electrons are between four to eight, thevalency is calculated by individually from eight and also valency will certainly be zero. Atomshaving four outermost electrons possess both optimistic and negative valency, andatoms having actually eight outermost electrons, valency will be zero (i.e. Noblegases).

Elements favor fluorinecan with the steady state (nearest inert gas configuration: Ne) by acquiring oneelectron.So that the valency that fluorine is 1.

Mathematically, theelectronic construction of fluorine is 2, 7. And as we know, if electrons inoutermost covering exceeds native 4, it need to be subtracted native 8. So,

ElectronConfiguration the fluorine (S) = 2, 7

We have the right to see the outermost covering of fluorine has 6 electrons so, need to subtract it from 8.

8 – 7 = 1

That’s why valencyof fluorine is 1.

Note: In general, fluorinehas a secure oxidation state the -1 many of the time yet it deserve to differ insome compound favor F2 and HOF wherein its oxidation state is 0 and also +1respectively. Execute not confuse through -1 or something rather (0 or +1) with positiveor negative signs, that is simply an oxidation number that can vary from compound tocompound. But its valency is constantly 1 in any kind of case.

In one more sense, afluorine atom can form a preferably of one covalent shortcut in a chemical bonding (Forexample: HF, SiF4, CF4, etc.), and also that what valency is, the maximum ability toform bonds v atoms at the time of chemistry bonding.

See more: What Does The Name Deandra Mean ? Girl'S Name Meaning, Origin, And Popularity

We can additionally findthe valency of fluorine through the aid of the routine table. Together fluorinebelongs to team 17 (17A or VIIA) in addition to chlorine (Cl), bromine (Br), and also iodine(I), and also astatine (At). This group elements are also called halogens. All theseelements have actually a valency the one.