Sodium, a chemical aspect with price Na, is one of the highlyreactive alkali metals of group 1 v atomic number 11 in the periodic table. Sodiumis not found in a cost-free state in nature due to its high reactivity habits so the it is abstracted from different compounds (mostly from salts).

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As we know how much salt is being used in the world ofchemistry, so we must have very an excellent proper information around its electronic properties to make it through in the world of chemistry and that’s why you are below toknow what valence electrons and also valency of sodium are, aren’t you? but for thisyou have to know what these two terms are, so without wasting your time let"s gofor it,

Difference between valence electrons and also valency

Valence electrons room the total variety of electrons presentin the outermost shell of one atom (i.e. In outermost orbital). The valenceelectrons for a neutral atom is always definite, it cannot be varied (more orless) in any type of condition because that a specific atom and also may or no be equal to itsvalency.


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

Sodium (Na) valence electrons

There are four basic steps to discover out the valence electrons for sodium atom i m sorry are:

Step 1: uncover the atomic Number


To discover out the atomic variety of sodium, we have the right to use the periodictable. With the assist of the regular table, we can conveniently see the the atomic number ofsodium is 11. Together its atomic number is 11, it has actually a complete of 11 protons and forneutral sodium, the variety 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 arrangement of electron on theorbitals. The sodium atom has actually a full of 11 electrons, therefore we need to put 11electrons in orbitals. The an initial two electrons will go in the 1s orbital together Sorbital have the right to hold a preferably of 2 electrons only. The following two will go in 2sorbital and also the next six electrons will certainly go in 2p orbital together P orbital can onlyhold a maximum of 6 electrons. Now the extra one will enter the 3S orbital. Now wehave,

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

Step 3: identify Valence Shell

As us know, the valence covering of one atom deserve to be found from the highest number of principle quantum number which is express in the ax of nand in1s22s22p63s1, the greatest value that n is 3 so the the valence covering ofNa is3s1.

Step 4: uncover Valence Electrons

The total number of electrons present in the valence shellof one atom is called valence electrons, and also there is just one electron presentin the valence shell of salt (3s1). Thus, sodium has only one valenceelectron.

Valency of salt (Na)

There are numerous different methods to discover out the valency of anatom which shows the capability of one atom to bond with other atoms. Valence describeshow conveniently an atom or a totally free radical can incorporate with various other chemical species. Thevalency of one atom is determined based on the variety of electrons lost, gained, or common with one more atom.

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

Alkali metals favor sodium reached the steady (nearest inertgas configuration) by losing one outermost electron. So that the valency ofsodium (Na) is 1.

We can also find the valency of sodium v the help of a regular table. As salt is an aspect of team 1 which shown alkalimetals group and valency that alkali steels are always 1.

Valence electrons and valency of Na+

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

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Na+ valency is no zero prefer noble gas together their outermostshell has eight electrons. When a sodium atom loses one electron, Na+ ion is produced and also that’s what valency is. So that Na+ valency is +1 no zero.

Chemical Properties

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

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