Sodium, a chemical facet with symbol Na, is just one of the highlyreactive alkali metals of group 1 with atomic number 11 in the periodic table. Sodiumis not discovered in a free state in nature due to its high reactivity behavior so that it is abstracted from different compounds (mostly indigenous salts).

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As us know just how much sodium is being provided in the human being ofchemistry, so us must have very an excellent proper information around its digital properties to make it through in the people of chemistry and that’s why friend are right here toknow what valence electrons and also valency of sodium are, aren’t you? yet for thisyou have to know what these two terms are, so without wasting her time let"s gofor it,

Difference between valence electrons and also valency

Valence electrons room 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 condition for a specific atom and also may or no be same to itsvalency.


Valency is identified as the total variety of electrons one atomcan lose, gain, or share 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 chemical reactions early out to various bondingmechanisms.

Sodium (Na) valence electrons

There are four simple steps to discover out the valence electron for sodium atom which are:

Step 1: uncover the atomic Number


To uncover out the atomic number of sodium, we have the right to use the periodictable. With the aid of the periodic table, we can quickly see that the atomic number ofsodium is 11. Together its atomic number is 11, it has a full of 11 protons and forneutral sodium, the number of protons is always equal come the number of electronsi.e. 11 electron 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 an initial two electrons will go in the 1s orbital together Sorbital can hold a best of two electrons only. The following two will certainly go in 2sorbital and also the following six electrons will go in 2p orbital as P orbital have the right to onlyhold a preferably of 6 electrons. Now the extra one will get in the 3S orbital. Now wehave,

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

Step 3: recognize Valence Shell

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

Step 4: find Valence Electrons

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

Valency of salt (Na)

There are many different means to discover out the valency of atom which shows the capacity of an atom come bond with various other atoms. Valence describeshow quickly an atom or a complimentary radical can combine with other chemical species. Thevalency of an atom is determined based on the variety of electrons lost, gained, or common with one more atom.

An atom is said to it is in stable once its outermost shells haveeight electrons (except H and He). If the total variety 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 calculation by subtractingfrom eight and valency is negative. Atom having four outermost electronspossess both hopeful and an adverse valency and also atom having actually eight outermostelectrons have zero valencies (i.e. Noble gases).

Alkali metals like 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 the sodium through the aid of a periodic table. As salt is an aspect of group 1 which indicated alkalimetals group and also valency the alkali steels are always 1.

Valence electrons and valency the Na+

Sodium-ion Na+ way it has actually lost one electron and has only10 electrons in the orbitals. The electron configuration of neutral Na is1s22s22p63s1but in Na+ it loses one electron, therefore it has a brand-new electron configuration of1s22s22p6means Na+ has (2+6=8) outermost electrons which renders 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 actually eight electrons. When a salt atom loser one electron, Na+ ion is produced and that’s what valency is. So the Na+ valency is +1 not zero.

Chemical Properties

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

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