Sodium, a chemical facet with symbol Na, is among the highlyreactive alkali metals of team 1 v atomic number 11 in the regular table. Sodiumis not discovered in a free state in nature as result of its high reactivity behavior so that it is abstracted from different compounds (mostly native salts).

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As we know how much salt is being provided in the people ofchemistry, so us must have very good proper information about its electronic properties to make it through in the human being of chemistry and also that’s why friend are right here toknow what valence electrons and also valency of salt are, aren’t you? yet for thisyou have to know what these two terms are, so there is no wasting your time let"s gofor it,

Difference between valence electrons and valency

Valence electrons are the total number of electrons presentin the outermost shell of one atom (i.e. In outermost orbital). The valenceelectrons for a neutral atom is constantly definite, it cannot be varied (more orless) in any kind of condition because that a certain atom and also may or not be equal to itsvalency.


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

Sodium (Na) valence electrons

There space four basic steps to uncover out the valence electron for sodium atom which are:

Step 1: uncover the atom Number


To discover out the atomic variety of sodium, we deserve to use the periodictable. Through the aid of the periodic table, we can conveniently see the the atom number ofsodium is 11. As its atomic number is 11, it has actually a total of 11 protons and forneutral sodium, the variety of protons is constantly equal to the variety of electronsi.e. 11 electron in the nucleus.

Step 2: compose Electron Configuration


Electron construction is the setup of electron on theorbitals. The salt atom has a complete of 11 electrons, for this reason we have to put 11electrons in orbitals. The very first two electrons will certainly go in the 1s orbital as Sorbital can hold a maximum of 2 electrons only. The following two will certainly go in 2sorbital and also the next six electrons will go in 2p orbital as P orbital deserve to onlyhold a maximum of 6 electrons. Currently the extra one will get in the 3S orbital. Now wehave,

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

Step 3: determine Valence Shell

As us know, the valence shell of an atom have the right to be discovered from the highest number of principle quantum numbers which is expressed in the ax of nand in1s22s22p63s1, the greatest value that n is 3 so the the valence shell ofNa is3s1.

Step 4: discover Valence Electrons

The total variety of electrons existing in the valence shellof an atom is dubbed valence electrons, and there is just one electron presentin the valence covering of salt (3s1). Thus, sodium has only one valenceelectron.

Valency of sodium (Na)

There are countless different ways to uncover out the valency of atom which shows the capability of one atom come bond with various 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 number of electrons lost, gained, or shared with one more atom.

An atom is stated to be stable as soon as its outermost shells haveeight electron (except H and also He). If the total number of electrons inoutermost shells is between one to four, the atom has actually positive valency and also ifelectrons are between four to eight, the valency is calculated by subtractingfrom eight and valency is negative. Atoms having 4 outermost electronspossess both positive and an unfavorable valency and also atom having actually eight outermostelectrons have actually zero valencies (i.e. Noble gases).

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

We can additionally find the valency that sodium through the help of a periodic table. As salt is an aspect of team 1 which shown alkalimetals group and valency that alkali metals are constantly 1.

Valence electrons and also valency of Na+

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

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Na+ valency is not zero favor noble gas together their outermostshell has actually eight electrons. When a salt atom loses one electron, Na+ ion is produced and that’s what valency is. So that Na+ valency is +1 no zero.

Chemical Properties

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

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