Sodium, a chemical aspect with price Na, is just one of the highlyreactive alkali steels of team 1 with atomic number 11 in the regular table. Sodiumis not uncovered in a totally free state in nature due to its high reactivity actions so that it is abstracted from various compounds (mostly indigenous salts).

You are watching: How many valence electrons do sodium have

As we know exactly how much salt is being used in the people 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 you are below toknow what valence electrons and also valency of salt are, aren’t you? yet for thisyou need to know what these 2 terms are, so without wasting your time let"s gofor it,

Difference between valence electrons and also valency

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


Valency is identified as the total number of electrons an atomcan lose, gain, or re-publishing at the moment of bond development to obtain astable electronic configuration i.e. To complete an octet. The valency of an atom canbe variable in different compounds or in chemical reactions due to various bondingmechanisms.

Sodium (Na) valence electrons

There room four simple steps to uncover out the valence electrons for salt atom which are:

Step 1: discover the atom Number


To find out the atomic variety of sodium, we deserve to use the periodictable. Through the help of the periodic table, us can easily see that the atomic number ofsodium is 11. Together its atomic number is 11, it has actually a complete of 11 protons and also forneutral sodium, the variety of protons is constantly equal come the number of electronsi.e. 11 electron in the nucleus.

Step 2: write Electron Configuration


Electron configuration is the plan of electron on theorbitals. The sodium atom has a complete of 11 electrons, so we have to put 11electrons in orbitals. The first two electrons will go in the 1s orbital as Sorbital can hold a maximum of 2 electrons only. The next two will go in 2sorbital and also the next six electrons will go in 2p orbital as P orbital have the right to 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 have the right to be discovered from the highest variety of principle quantum numbers which is expressed in the term of nand in1s22s22p63s1, the greatest value that n is 3 so that the valence covering ofNa is3s1.

Step 4: discover Valence Electrons

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

Valency of salt (Na)

There are countless different methods to uncover out the valency of anatom which mirrors the capacity of an atom come bond with various other atoms. Valence describeshow easily an atom or a totally free radical can combine with other chemical species. Thevalency of one atom is determined based upon the number of electrons lost, gained, or common with another atom.

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

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

We can likewise find the valency that sodium v the assist of a routine table. As sodium is an facet of team 1 which suggested alkalimetals group and also valency that alkali steels are always 1.

Valence electrons and valency that Na+

Sodium-ion Na+ way 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, therefore it has actually a brand-new electron configuration of1s22s22p6means Na+ has actually (2+6=8) outermost electron which renders it stable. Thus, sodiumion (Na+) has eight valence electrons.

See more: Why Did Voldemort Try To Kill Harry Potter When He Was An Infant?

Na+ valency is not zero choose noble gas together their outermostshell has eight electrons. As soon as a sodium atom loses one electron, Na+ ion is produced and also that’s what valency is. So that Na+ valency is +1 not zero.

Chemical Properties

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

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