How many valence electrons does Beryllium have?

Determination of the valency of beryllium Valence electrons

The symbol for Beryllium, the fourth element on the periodic table, is “Be”. Beryllium is involved in the formation bonds via valence electrons. Beryl (aquamarine and emerald) are notable gemstones that contain high levels of beryllium. It is a rare element within the universe. It occurs as a result of the spallation larger atomic nuclei colliding with cosmic radiation. Beryllium is lost to the stars’ cores as it is fused into heavier elements.

Beryllium, an alkaline earth metallic, is also known as. It is silver-white in color and has a low density. It can be found in many minerals, including beryl, which is rich in precious forms like emerald or aquamarine. About 0.0004 percent of Earth’s crust is made up of Beryllium. World’s annual beryllium production is 220 tonnes. This amount of beryllium is typically extracted from the mineral beryl. It’s a complicated process, as beryllium bonds strongly with oxygen.

Beryllium element


The Greek beryllos is also known as sweet. Vauquelin discovered the oxide form of the metal in beryl and emeralds in 1798. Wohler and Bussy isolated the metal in 1828 using the potassium reaction on beryllium chlorineide.


In alloys with nickel or copper, beryllium can be used to make gyroscopes and springs. These metals can be mixed with beryllium to increase their thermal and electrical conductivity. Other beryllium alloys can also be used to build high-speed aircraft and missiles, as well as spacecraft, and communications satellites.

Ultra-thin beryllium foil, which is transparent to Xrays, is being used in Xray lithography. Beryllium can also be used in nuclear reactors to reflect neutrons or modify them. It has a high melting point, making it both useful in nuclear work and for ceramic applications.

Natural abundance

There are about 30 mineral species that contain beryllium. Beryl (beryllium aluminium silicate) and Bertrandite (beryllium slicate) are the most important. Beryl can also be found in precious forms like aquamarine and mercury. The most common way to make the metal is to reduce beryllium fluoride and magnesium metal.

Position of Beryllium in the periodic table

Position of Beryllium in the periodic table

Beryllium has health effects

Beryllium, while not an element essential for humans, is actually one of the most dangerous chemicals that we know. Beryllium is a heavy metal that can cause lung damage and pneumonia. Berylliosis is the most well-known effect of beryllium. This is a serious and persistent lung disease that can also cause damage to other organs such as the heart. This disease is responsible for approximately 20% of all deaths.

Berylliosis is caused by inhaling beryllium at work. This disease is more common in people with weak immune systems. People who are allergic to beryllium may also experience allergic reactions. These reactions can be severe and can lead to serious illness. This is known as Chronic Beryllium Disorder (CBD). These symptoms include weakness, tiredness, and breathing difficulties. CBD can cause anorexia, blueness in the hands and feet, and even death. CBD can sometimes cause death in some cases.

Beryllium environmental effects

Natural processes and human activity result in Beryllium entering the soil, air, and water. It is found in the environment in very small quantities. The human body adds beryllium by producing metal and burning oil and coal. Beryllium is found in the air as tiny dust particles. It can enter waterways through weathering of rocks and soils. Beryllium can be added to the air by industrial emissions and water from wastewater disposals.

It settles most often in sediment. Although beryllium is a chemical element, it can be found in soils in very small quantities. Human activities have increased its levels. Beryllium will not move into soil deeper or dissolve in groundwater.

atomic number4
atomic weight9.0121831
boiling point2,471 °C (4,480 °F)
melting point1,287 °C (2,349 °F)
specific gravity1.85 at 20 °C (68 °F)
oxidation state+2
electron configuration1s22s2


One naturally occurring beryllium-9 isotope exists. An element can be made up of multiple forms, called isotopes. The mass number of isotopes makes them different from one another. The mass number is the number that appears to the right side of an element’s name. The element’s mass number is the sum of all the protons and neutrons found in its nucleus. While the number of protons is the most important factor in determining the element, the number of neutrons within an atom can also vary. Each variation is called an isotope.

Six radioactive beryllium isotopes are also known. Radioactive isotopes are those that break down and give off radiation. Radioactive isotopes can be produced by firing very small particles at atoms. These particles stick to the atoms, making them radioactive.

Biological role

Beryllium, and its compounds, are carcinogenic and toxic. Inhaling beryllium fumes or dust can cause an irreversible inflammation of the lungs, called berylliosis.

What are the valence electrons in beryllium (Be)?

The valence electrons are the total number of electrons found in the shell that has been formed after the electron configuration is complete. The total number of electrons in a given orbit is called the valence electron. The properties of an element are determined by the valence electrons. They also participate in the formation bonds. This site has an article that explains the electron configuration in beryllium. You can read it if necessary.

What are the valence electrons of beryllium(Be)

What number of electrons, protons, and neutrons does a Be atom contain?

The nucleus can be found in the middle of an atom. The nucleus contains protons and neutrons. The atomic number for beryllium has a value of 4. The number of protons in a given atom is called the atomic number. The number of protons found in beryllium is therefore four. A circular shell is located outside of the nucleus and contains electrons that are equal to protons. A beryllium (Be) atom can have a total number of four electrons.

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

We know that beryllium has an atomic number 4 and an atomic mass number 9 (9.012). Neutron (n) = 9 – 4 = 5. The number of neutrons found in beryllium therefore equals 5.

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 calculate the number valence electrons within a Be 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. You can find it here. This article focuses on electron configuration.

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 beryllium.

Calculating the total number electrons in beryllium (Be)

First, we must know the number of electrons within the beryllium-atom. You need to know how many protons beryllium contains in order to determine the number electrons. To know the number protons, you must know the atomic number for the element beryllium. A periodic table is required to determine the atomic number. The periodic table contains the information necessary to determine the atomic number for beryllium elements.

The number of protons is called the atomic number. The nucleus is home to electrons that are equal to protons. This means that electrons are equal to the atomic numbers in the beryllium-atom atom. The atomic number for beryllium can be seen in the periodic table at 4. This means that a beryllium-atom has four 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.

Beryllium electron configuration (Be) is required

Important step 2 This step involves the arrangement of electrons in beryllium. We know that each beryllium atom has four electrons. The electron structure of beryllium indicates that there are two electrons within the K shell and two inside the L shell. This means that the first shell of beryllium contains two electrons, while the second shell contains two. Through the sub-orbit, beryllium’s electron configuration is 1s2 2s2.

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 beryllium indicates that the last shell contains two electrons (2s2). The valence electrons in beryllium therefore have two.

  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.

Combination of beryllium and valence electrons to form beryllium

Through its valence electrons, Beryllium is involved in the formation bonds. Two valence electrons are found in beryllium. This valence electron is involved in the formation bonds with other elements. The fluorine electron configuration shows that there are seven valence electrons in fluorine.

Fluorine receives the electrons from the beryllium atom, which donates its valence electrons. Fluorine is now able to acquire the configuration of neon while the beryllium-atom gains the electron configuration that corresponds to helium. Beryllium fluoride (BeF2) forms when electrons are exchanged between two atoms each of beryllium or fluorine. Beryllium fluoride (BeF2) is an ionic bond.

How many valence electrons does beryllium ion (Be+2) have?

The electron configuration is complete when the shell that contains the last beryllium atom has 2 electrons. In this instance, the valency electrons and valence electrons are both 2. This is what we know. During bond formation, elements with 1, 2, or three electrons in their last shells donate those electrons to the next shell.

Cations are elements that create bonds through the donation of electrons. Beryllium, for example, is a cation-element. Beryllium uses the electrons from the shells to form bonds, and then turns into berylliumions.

How many valence electrons of beryllium ion(Be+2) have

The electron configuration for beryllium (Be+2) is 1s2. The electron configuration of beryllium is one shell. This shell contains two electrons. The electron configuration indicates that the beryllium-atom has the electron arrangement of helium. In this instance, the valence for the beryllium ion is +2. The valence electrons for a beryllium ion have two electrons because the shell that contains the beryllium ion’s last shell has two electrons.

Calculation of the valency beryllium

Valency (or valence) is the ability to bind an atom and create compounds. There are a few rules that can be used to determine valency. The valency of an element is the number of electrons found in an unpaired state in an orbital after an electron configuration is established. The electron configuration for beryllium is 1s2s2. The electron configuration of beryllium indicates that beryllium contains two unpaired electrons at the last orbital.

Determination of the valency of beryllium

The valency of beryllium therefore is 2.

Beryllium Facts

  • James Chadwick bombarded beryllium using alpha particles, and observed a subatomic particle without an electrical charge. This led to the discovery the neutron.
  • Because of the sweetness of beryllium salts, Beryllium was initially called ‘glyceynum. Glykis, which is Greek for “sweet”, is the original name of Beryllium. To avoid confusion with other sweet-tasting elements and a group of plants called “glucine”, the name was changed from beryllium. In 1957, the official name for the element was changed to Beryllium.
  • Wohler was the first to propose the name for beryllium as a new element.
  • In 1828, pure beryllium could be isolated by two distinct chemists independently: Friederich Wohler from Germany and Antoine Bussy from France.


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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