Sulfur, a chemicalelement with the prize S and atomic number 16, is the tenth and fifth-mostcommon facet by massive in the universe and also on the earth respectively. In ~ normaltemperature and also pressure sulfur atoms form cyclic octatomic molecule (chemicalformula S8).

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Sulfur is a really important aspect in both perspectives: biological and chemical. That is an essentialcomponent of all living cells, and also is a significant component the proteins, enzymes,vitamins, amino acids, cysteine, etc. Which display its organic importance.

Elemental sulfur isused together 85% of the production of the king of compound H2SO4 not just this countless majors’compounds like SO2, H2S are prepared with the aid of elemental sulfur whichshows its chemical importance.

You are below toknow valence electron of a sulfur atom, aren’t you? Don’t worry together with sulfurvalence electrons us will define its valency also. But before that let’s havesome straightforward ideas around what these two terms are:

Difference BetweenValence Electrons and Valency

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


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Valency is definedas the total variety of electrons, an atom deserve to lose, gain, or share in ~ the timeof bond development to gain a stable digital configuration i.e. To complete anoctet. The valency of one atom can be variable in different compounds orchemical reactions because of the different bonding circumstances. Most of the timevalency varies/changes early to change in oxidation and also reduction states.

Sulfur (S) ValenceElectrons

There are foursimple steps to discover out the valence electrons because that sulfur atom i beg your pardon are:

Step 1: uncover theAtomic Number


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To find out theatomic variety of sulfur, we have the right to use the regular table. With the help of theperiodic table, we can easily see the the atomic variety of sulfur is 16. Asits atom number is 16, it has 16 protons, and also for neutral sulfur, the numberof proton is always equal to the number of electrons i.e. Has actually 16 electron inits nucleus.

Step 2: WriteElectron Configuration


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Electronconfiguration is the arrangement of electron on the orbitals. The sulfur atomhas a total of 16 electron so, we have to put 16 electrons in orbitals. Theelectrons will be placed in different orbitals according to the energy level:<1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f>. Now,

Sulfur electronconfiguration S (16) =1s22s22p63s23p4(completeconfiguration).

=3s²3p⁴(condensed configuration).

Step 3: DetermineValence Shell

As we know, thevalence covering of an atom deserve to be uncovered from the highest variety of principlequantum number which are expressed in the ax of n, and also in 3s²3p⁴, thehighest value of n is 3 so the the valence covering of sulfur is3s²3p⁴.

Step 4: FindValence Electrons

The full number ofelectrons present in the valence covering of an atom are referred to as valence electrons,and there room a total of 6 electrons existing in the valence shell of sulfur (3s²3p⁴).Thus,sulfur has actually six valence electrons.

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Valency of Sulfur (S)

There are manydifferent ways to uncover out the valency of one atom which reflects the capacity ofan atom come bond with other atoms. Valence defines how quickly an atom or afree radical can integrate with other chemical species. The valency of one atom isdetermined based on the variety of electrons lost, gained, or shared withanother atom at the time of link formation.

An atom is stated tobe stable once its outermost shells have actually eight electron (except H & He).If the total number of electrons in outermost shells is in between one to four,the atom has positive valency and if electron are between four to eight, thevalency is calculate by subtracting from eight and valency will certainly be zero. Atomshaving 4 outermost electrons possess both hopeful and an adverse valency, andatoms having eight outermost electrons, valency will certainly be zero (i.e. Noblegases).

Elements favor sulfurcan reach the stable state (nearest inert gas configuration: Ar) by getting 2electrons.So the the valency that sulfur is 2.

Mathematically, theelectronic configuration of sulfur is 2, 8, 6. And also as us know, if electron inoutermost covering exceeds from 4, it need to be subtracted from 8. So,

ElectronConfiguration that sulfur (S) = 2, 8, 6

We deserve to see the outermost covering of sulfur has actually 6 electron so, have to subtract that from 8.

8 – 6 = 2

That’s why valencyof sulfur is 2.

Note: In general, sulfurhas a stable oxidation state of -2 in many of the compounds however it different from-2 to +6 in various compounds because of the various bond stability andformation. Execute not confuse v -2 or something else with positive or negativesigns, the is simply an oxidation number that can vary from compound to compound. Butits valency is constantly 2 in any kind of case.

In an additional sense, asulfur atom can type a preferably of 2 covalent binding in chemical bonding (For example:CS2, H2S, etc.), and also that what valency is, the maximum capacity to form bondswith atom at the time of chemistry reactions.

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We can also findthe valency of sulfur with the help of the routine table. As sulfur belong togroup 16 (6A or VIA) together with oxygen (O), arsenic (As), and also selenium (Se), tellurium(Te), polonium (Po), and livermorium (Lv). This group facets are additionally called chalcogen.All these aspects have a valency the 2.