How many valence electrons does Silicon have?

What is the valency of silicon(Si) Valence electrons

Silicon is the 14th Element of the periodic table. Silicon is a semiconductor material. Its symbol is “Si”. Silicon is involved in the formation bonds via its valence electrons . This article explains in detail the valence electronics of silicon (Si). 

The eighth most abundant element in all of the universe is silicon. However, it rarely occurs in its pure form in the Earth’s crust. It is found most frequently in space as cosmic dusts, planetoids and silicates. More than 90% of Earth’s crust is made of silicate mineral. This makes silicon the 2nd most abundant element in Earth’s crust (28% by mass), behind oxygen. Silicon, a natural element with a residence time of around 400 years in the oceans, is not present previously.

Silicon element


Jons Jacob Berzelius was a Swedish chemist who discovered silicon in 1824. He heated chips of sodium in a silica vessel and then carefully wiped away any by-products. Silicon is the seventh most abundant element in all of the universe, and the second most abundant element in the earth’s crust. Silicon is made today by heating sand with carbon to temperatures close to 2200 degC.


Silicon is one the most important elements in our lives. The majority of it is used to create alloys, including ferro-silicon (ironsilicon) and aluminium-silicon. These materials are used to create dynamo, transformer plates, engine blocks and cylinder heads, as well as machine tools, and to deoxidize steel. Silicon carbides are an important abrasive and are used in lasers.

Silicon can also be used to create silicones. These are silicon-oxygen polymers that have methyl groups. Silicone oil can be used as a lubricant in cosmetics and hair conditioners. Silicone rubber can be used to waterproof bathrooms, around pipes, roofs, and windows.

Complex silicates are found in granite and other rocks. These are used in civil engineering projects. Concrete and cement are made from sand (silicon dioxide, silica), and clay (aluminium slicate). Glass has many uses, and sand is the main ingredient. Silicon, also known as silicate or pottery, can be found in enamels, high-temperature ceramics, and pottery.

Position of Silicon in the periodic table

Position of Silicon in the periodic table

Silicon Properties

The element silicon has many unique properties that are important in both industrial and commercial applications. Silicon is a metalloid as mentioned previously. This is why it exhibits a mixture of metal-like and non-metal properties. The physical and chemical properties of silicon are discussed below.

Biological role

Although silicon is vital for plant life, its use in animal cells remains uncertain. Phytoliths, which are tiny pieces of silica, form in some plants. These particles are useful evolutionary evidence because they do not decay. Silicosis is a serious lung disease that can be fatal to workers such as stonecutters and miners who are regularly exposed to siliceous particles.

Natural abundance

By mass, silicon makes up 27.7% Earth’s crust. It is the second-most abundant element after oxygen. It is not found in nature uncombined, but it occurs primarily as an oxide (silica), and as silicates. It can be found in sands, rock crystals, quartz, rock, amethysts, flints, opal, and rock crystals. Asbestos, mica, clay, feldspar and clay are all examples of silicate.

Commercial production of elemental silicon can be achieved by heating sand with carbon in an electrical furnace. For electronics, high-purity silicon is made by thermal decomposition and subsequent recrystallization.

atomic number14
atomic weight28.086
boiling point3,265 °C (5,909 °F)
melting point1,410 °C (2,570 °F)
density2.33 grams/cm3
oxidation state−4, (+2), +4
electron configuration1s22s22p63s23p2

What are the valence elements of silicon (Si)?

Silicon, which is a semiconductor materials, is the second element in group 14. Many electronic devices are made from silicon materials. Doping silicon is necessary to make electronic devices. Doping involves attaching or removing an electron from the silicon valence electron. The valence electron refers to the number of electrons remaining in the shell after the electron configuration. The valence electrons are the total number of electrons found in the shell that contains the silicon electron configuration. The properties and formation of bonds are controlled by the valence electrons. This site has an article that explains the electron configuration in silicon. You can find it here.

What are the valence electrons of silicon(Si)

What number of electrons, protons, and neutrons does Silicon (Si) contain?

The nucleus can be found in the middle of an atom. The nucleus is home to protons and neutrons. The atomic number for silicon (Si) is 14. The number of protons is called the atomic number. The number of protons found in silicon (Si) is 14 The nucleus contains an electron shell that is equal to the protons. A silicon atom can have a total number of 14 electrons.

The difference between the number atoms and the number atomic masses is what determines the number neutrons in an element. This means that neutron number (n) = atomic mass (A) + atomic number (Z).

We know that silicon has an atomic number 14 and that its atomic mass number 28 (28.084). Neutron (n) = 28 – 14 = 14. The number of neutrons found in silicon (Si) is therefore 14.

Valence is the ability of an atom of a chemical element to form a certain number of chemical bonds with other atoms. It takes values from 1 to 8 and cannot be equal to 0. It is determined by the number of electrons of an atom spent to form chemical bonds with another atom. The valence is a real value. Numerical values of valence are indicated with roman numerals (I,II, III, IV, V, VI, VII, VIII).

How can you find the number of valence electrons within a silicon (Si) atom.

These are the steps to determine the valence electron. One of these is the electron configuration. Without an electron configuration, it is impossible to determine the valence of any element. It is easy to determine the valence of any element by knowing the electron configuration. This site has an article that explains the electron arrangement. You can find it here. This article focuses on the electron configuration of silicon.

However, it is possible to identify valence electrons by placing electrons according the Bohr principle. We will now learn how to identify the valence electron in silicon (Si).

Calculating the total number (Si) of electrons in silicon

First, we must know the number of electrons present in the silicon atom. You need to know how many protons are in silicon to determine the number electrons. You also need to know what the atomic number is of the silicon element to determine the number of protons.

A periodic table is required to determine the atomic number. The periodic table contains the atomic numbers of the elements silicon (Si). The number of protons is called the atomic number. The nucleus also contains electrons that are equal to protons.

This means that we can now say that the number of electrons in the silicon atom is equal to its atomic number. The atomic number for silicon is 14 according to the periodic table. This means that a silicon atom contains 14 electrons.

The terms “oxidation degree” and “valence” may not be the same, but they are numerically almost identical. The conditional charge of an atom’s atom is called the oxidation state. It can be either positive or negative. Valence refers to the ability of an atom form bonds. It cannot have a negative value.

You will need to conduct electron configurations of silicon (Si)

Important step 2 is. This step involves the arrangement of the electrons in silicon. We know that each silicon atom has 14 electrons. The electron structure of silicon shows that there is two electrons in K shell, eight L shell, and four M shell.

This means that the first shell of silicon contains two electrons, while the second shell contains eight electrons and third shell contains four electrons. Through the sub-orbit, the electron configuration of silicon (Si) is 1s2 2s2 2p6 3s2 3p2.

Calculate the total electrons and determine the valence shell

The third step is to determine the valence. The valence shell is the last shell after the electron configuration. A valence electron is the total number of electrons found in a valenceshell. The electron configuration of silicon shows the fourth shell has four electrons (3s2, 3p2). The valence electrons in silicon (Si) have four.

  1.  The valence is a numerical characteristic of the ability of atoms of a given element to bond with other atoms.
  2. The valence of hydrogen is constant and equal to one.
  3. The valence of oxygen is also constant and equal to two.
  4. The valence of most of the other elements is not constant. It can be determined by the formulas of their binary compounds with hydrogen or oxygen.

Silicon compound formation (Si)

Through its valence electrons, Silicon (Si) is involved in the formation bonds. This valence element participates in the formation bonds with other elements’ atoms. By sharing electrons with oxygen, silicon atoms can form bonds. The electron configuration for oxygen indicates that there are six value electrons of the oxygen. SiO2 compounds are made by two silicon atoms and one oxygen atom.

The silicon atom then completes its octave, and gains the electron configuration of the Argon. Oxygen, on the other hand acquires the electronic configuration of neon.

A silicon atom shares electrons and two oxygen atoms to create the silicon dioxide (SiO2) compound by forming a covalent bond. A covalent bond is silicon dioxide (SiO2).

What number of valence electrons does the silicon ion possess?

The electron configuration is complete. The last shell (orbit) of a silicon atom contains four electrons. The valency and the valence silicon electrons are 4 in this instance. Four electrons are required for elements to receive and reject electrons. To complete their octave, these elements must share electrons with other elements.

Since silicon has four electrons in the last orbit, it completes the octave with four additional electrons from another element. silicon now has four electrons in its final orbit. This means that silicon can complete the octave of electrons by sharing four electrons with another element.

The result is that silicon fills its octave, and it becomes stable. As you can see, silicon takes on the electron configuration of inert gas Argon. We can see that there are eight valence electrons for silicon ions.

What is the valency for silicon (Si)?

Valency (or valence) is the ability of an element’s atom to join another atom in the formation of a molecule. The valency is the number of unpaired electrons found in an element’s last orbit. We know that the ground state electron configuration for silicon is 1s2 2s2 2p6 3s2 3p2. The electron configuration of an element in its excited state determines its value.

Si*(14), the electron configuration of silicon when it is excited, is 1s2 2s2 2p6 3s1 3px1 3py1 3pz1. This electron configuration shows that there are four unpaired electrons in the last shell of a silicon atom (3s1 3px1 3py1 3pz1).

What is the valency of silicon(Si)

The valency of silicon then is 4.


What property is silicon?
Silicon has many unique properties. Its solid state under standard conditions, its metallic luster and its ability to function as a semiconductor are some of its distinctive properties.
Is silicon a metal?
Silicon is not a metal or a nonmetal. Because of its mixture of nonmetal and metal-like properties, it is instead classified as a “metalloid”.
What type of element is silicon?
Silicon is classified as an element of metalliod. Silicon is a metalliod element because it has both nonmetal and metal properties.
Why is silicon non-metal?
Silicon is neither a nonmetal nor a metal. Because it has both metal and nonmetal properties, it is classified as a kind of element known as a metalloid.
What does silicon do in daily life?
There are many commercial and industrial uses for silicon and its compounds. It is used in electronics devices like phones and computers, as well as for glass production (as silica or silicates) and medical procedures (as silicon).

Silicon Facts

  1. Silicon is a metallicloid. This means that it has both the properties of metals and nonmetals. As with other metalloids silicon can be found in different forms. Amorphous silicon is often viewed as a gray powder. Crystalline silicon, on the other hand, is a gray solid with shiny metallic properties.
  2. It is possible to obtain extremely pure silicon. You can obtain silicon at >99.9% purity by using molten salt electrolysis or other silicon compounds.
  3. Jons Jakob Berzelius is the Swedish chemist who discovered silicon. He used potassium fluorosilicate and potassium to create amorphous silicon. This was a name he gave silicium. It was first suggested by Sir Humphrydavy in 1808.
  4. The majority of silicon is used in the production of the alloy ferrosilicon. It is used to make steel. It is used to produce semiconductors and other electronic devices.
  5. Thomas Thomson, a Scottish chemist, named the element silicon in 1831. He kept part of Berzelius’ name, but changed the ending to -on to reflect the fact that the element had more similarities to carbon and boron than the metals with -ium names.
  6. Silicon is essential for both plant and animal life. Diatoms and other aquatic organisms use silicon to build their skeletons. Silicon is essential for the creation of collagen and elastin, as well as healthy skin and hair.
  7. Natural silicon is composed of three stable elements: silicon-28/29 and silicon-30. Silicon-28, which accounts for 92.23% the natural element, is the most common. There are at least twenty radioisotopes, the most stable of which is silicon-32 with a half-life 170 years.
  8. Silicosis is a condition that can be caused by inhaling large amounts of silicon compounds. This could happen to miners, stone cutters and others who live in sandy areas.
  9. Silicon, which is 27% of Earth’s crust, is the second-most abundant element by mass. It is found in silicate minerals like quartz and Sand. However, it rarely occurs as an element free.
  10. Silicon, like water, has a higher density when it is liquid than solid.


Alexander Stephenson

Candidate of Chemical Sciences, editor-in-chief of Lecturer at several international online schools, member of the jury of chemistry competitions and author of scientific articles.

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