Sodium, a chemical facet with price Na, is among the highlyreactive alkali steels of team 1 through atomic number 11 in the regular table. Sodiumis not found in a cost-free state in nature as result of its high reactivity actions so that it is abstracted from different compounds (mostly native salts).

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As we know how much salt is being offered in the civilization ofchemistry, so us must have very good proper information around its electronic properties to make it through in the world of chemistry and also that’s why girlfriend are here toknow what valence electrons and valency of sodium are, aren’t you? however for thisyou have to know what these 2 terms are, so without wasting her time let"s gofor it,

Difference between valence electrons and also valency

Valence electrons are the total variety of electrons presentin the outermost covering of an atom (i.e. In outermost orbital). The valenceelectrons for a neutral atom is constantly definite, it can not be varied (more orless) in any kind of condition for a specific atom and may or no be same to itsvalency.


Valency is characterized as the total variety of electrons one atomcan lose, gain, or re-superstructure at the time of bond development to gain astable electronic configuration i.e. To finish an octet. The valency of one atom canbe change in different compounds or in chemistry reactions early out to different bondingmechanisms.

Sodium (Na) valence electrons

There are four an easy steps to uncover out the valence electrons for salt atom which are:

Step 1: find the atomic Number


To find out the atomic number of sodium, we deserve to use the periodictable. V the help of the routine table, we can easily see that the atom number ofsodium is 11. As its atom number is 11, it has actually a complete of 11 protons and forneutral sodium, the number of protons is constantly equal come the number of electronsi.e. 11 electrons in the nucleus.

Step 2: compose Electron Configuration


Electron construction is the plan of electrons on theorbitals. The salt atom has actually a total of 11 electrons, so we need to put 11electrons in orbitals. The very first two electrons will certainly go in the 1s orbital as Sorbital have the right to hold a best of 2 electrons only. The next two will go in 2sorbital and the next six electrons will certainly go in 2p orbital together P orbital can onlyhold a preferably of 6 electrons. Now the extra one will go into the 3S orbital. Now wehave,

Sodium electron construction Na (11) =1s22s22p63s1(completeconfiguration) or3s1(condensed configuration).

Step 3: determine Valence Shell

As we know, the valence covering of an atom deserve to be discovered from the highest number of principle quantum number which is to express in the term of nand in1s22s22p63s1, the highest possible value that n is 3 so that the valence covering ofNa is3s1.

Step 4: discover Valence Electrons

The total variety of electrons current in the valence shellof an atom is referred to as valence electrons, and there is only one electron presentin the valence shell of sodium (3s1). Thus, sodium has only one valenceelectron.

Valency of salt (Na)

There are many different means to uncover out the valency of anatom which reflects the capability of one atom to bond with other atoms. Valence describeshow quickly an atom or a totally free radical can combine with various other chemical species. Thevalency of an atom is determined based upon the variety of electrons lost, gained, or common with one more atom.

An atom is stated to be stable once its outermost shells haveeight electron (except H and He). If the total number of electrons inoutermost shells is in between one come four, the atom has actually positive valency and also ifelectrons are in between four come eight, the valency is calculate by subtractingfrom eight and valency is negative. Atoms having four outermost electronspossess both positive and an unfavorable valency and also atom having eight outermostelectrons have actually zero valencies (i.e. Noble gases).

Alkali metals prefer sodium reached the secure (nearest inertgas configuration) by shedding one outermost electron. So the the valency ofsodium (Na) is 1.

We can likewise find the valency the sodium v the assist of a routine table. As sodium is an element of group 1 which indicated alkalimetals group and valency the alkali steels are constantly 1.

Valence electrons and also valency the Na+

Sodium-ion Na+ method it has actually lost one electron and also has only10 electron in the orbitals. The electron configuration of neutral Na is1s22s22p63s1but in Na+ it loses one electron, so it has a new electron configuration of1s22s22p6means Na+ has (2+6=8) outermost electron which renders it stable. Thus, sodiumion (Na+) has eight valence electrons.

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Na+ valency is not zero prefer noble gas together their outermostshell has actually eight electrons. When a sodium atom loses one electron, Na+ ion is produced and that’s what valency is. So that Na+ valency is +1 not zero.

Chemical Properties

Sodium (Na) atom
Atomic number11
Number the protons11
Number the electrons11
Electron configuration1s22s22p63s1
Valence electrons1

Sodium-ion (Na+)
Number of electrons10
Electronic configuration1s22s22p6
Valence electrons8