Beryllium is a relatively rare element in the universe, belonging to group 2 of the periodic table. It has the atomic number 4 and the symbol Be for its atomic number.
Nicolas-Louis Vauquelin was the first to discover Beryllium. At room temperature, it has a steel greyish appearance and is fragile. It is the lightest of the alkaline earth metals and is employed in metallurgy as a hardening agent. It is found in igneous rocks and is dispersed throughout the earth’s crust.
Greetings, friends! We’re here with another intriguing aspect to assist you with your Bohr model.
Beryllium will be discussed in this article.
Beryllium Bohr Model
Rutherford proposed an atom model in 1911, attempting to explain its different features.
The scientific community, however, rejected this model because it did not stand up to certain principles of classical mechanics and electromagnetic theory.
Later, in 1913, Bohr proposed a new model for understanding the structure of the atom, which was actually an enhanced version of the prior model, in collaboration with Rutherford.
The Bohr-Rutherford model of the atom, or simply the Bohr model of the atom, is a visual representation of the atomic structure.
This model overcame the majority of the previous model’s flaws and continues to be correct on several ideas to this day.
The stability of the atom and atomic particles is explained by the Bohr model. It also discusses the positions, charges, and other features of numerous atomic particles within the atom. It goes over the atom’s structure in great depth.
The nucleus is defined under the Bohr-Rutherford model as the atom’s centre or core, within which the atom’s whole positive charge is concentrated.
Protons are positively charged particles that live inside the nucleus. These are also in charge of keeping the atom’s charge balanced.
Neutrons are also charge-neutral entities that can be found inside the nucleus of an atom. They play an essential role in determining an atom’s varied properties.
Negatively charged electrons are another sort of atomic species. They do not live inside the nucleus, but rather orbit it. They move in a circular pattern around the nucleus, which is referred to as the shell.
Depending on the number of electrons present in an atom, it has a specific number of shells. K, L, M, N, and so on, or 1, 2, 3, 4, and so on, are the shells’ names.
Every shell has a limited electron carrying capacity, meaning it can only carry a certain number of electrons at any one time. Each shell also has a certain amount of energy attached to it, which is why they are also referred to as Energy levels.
Electrons have a unique ability to change energy levels based on their current state of energy.
This energy grows with the number of shells, therefore the outermost shell, known as the valence shell, carries the most energy, and the electrons in this shell are known as valence electrons.
5 neutrons, 4 protons, and 4 electrons make up the argon atom. The electrons are arranged in two shells around the nucleus, K and L shells or 1 and 2 shells, respectively.
|No. of Proton||4|
|No. of Neutron||5|
|Number of Electron||4|
|Number of shells||2|
|Number of electrons in first (K) shell||2|
|Number of electrons in second (L) shell||2|
|Number of valence electrons||2|
Drawing the Beryllium Bohr Model
Beryllium belongs to the alkaline-earth metal family and is found in Periodic Table Group 2 (IIa). Beryllium’s location is depicted in the diagram below:
The following is the information that we can obtain from the above-mentioned Beryllium box:
Beryllium has an atomic number of four.
Beryllium’s electrical configuration is [He] 2s2.
• Beryllium’s chemical symbol is Be.
The atomic mass of beryllium is 9.012.
We may draw the Bohr atomic model of the Beryllium atom using the aforementioned information.
Continue reading to learn more.
The Bohr model, as mentioned in the previous section, visualises the positions of distinct atomic species.
As a result, we must first determine the number of atomic species.
We’ll start by calculating the number of protons and neutrons inside the nucleus, because it’s the centre of an atom.
The atomic number of an atom is equal to the number of protons in that atom.
Beryllium has an atomic number of 4 and is found in the element Beryllium.
As a result, the Beryllium atom has a total of four protons.
We’ll also figure out how many neutrons are in this atom.
The following formula is used to compute the number of neutrons in an atom:
Number of neutrons = atomic mass of the atom rounded up to the closest full number – number of protons in the atom
The atomic mass of the Beryllium atom is 9.012.
We get 9 if we round it up to the nearest whole number.
As a result, the Beryllium atom’s neutron count is 9 – 4 = 5.
We may draw the nucleus of the Beryllium atom using the postulates of the Bohr atomic model now that we know the number of both atomic species, protons and neutrons.
The nucleus of the Beryllium atom is depicted in the diagram above.
We can now compute the number of electrons in this atom once we have sketched the nucleus of the atom.
The atomic number of an atom is equal to the number of electrons in that atom.
The Beryllium atom has an atomic number of 4.
As a result, the number of electrons in the Beryllium atom is equal to four.
Now we’ll figure out where these electrons are located within the atom.
The electrons are positioned outside the nucleus and are housed in different shells depending on their energies, as we learnt in the previous section.
We’ll count the amount of electrons that can fit into each shell starting with the lowest one.
The K shell is the one closest to an atom’s nucleus. As a result, we’ll start with the K shell.
The formula 2n2 gives the maximum number of electrons a shell can hold, or the electron carrying capacity of a shell.
As a result, the K shell’s electron carrying capacity = 2n2 = 2 X (1)2 = 2
As a result, the K shell can only hold a maximum of two electrons.
As a result, we’ll be able to fit two of Beryllium’s four electrons within its K shell.
We now have two additional electrons after this process.
So, using the same method, we’ll first determine the maximum number of electrons that can be accommodated in the next shell, the L shell.
As a result, the L shell’s electron carrying capacity = 2n2 = 2(2)2 = 8
As a result, an atom’s L shell can hold up to 8 electrons.
At this point, one critical atom-positioning rule must be mentioned.
When a shell has more than four electrons, the electrons are arranged in groups of four in a clockwise direction.
This indicates that the first four electrons are at a 90° angle to one another, and as the number of electrons increases, the angle decreases.
The L shell of the Beryllium atom, on the other hand, is left with only two electrons.
As a result, the number of electrons in Beryllium’s L shell is equal to two.
These electrons will be at a 90-degree angle to one another.
As a result, the Beryllium atom’s Bohr model has four protons, four electrons, and five neutrons.
Two of the four electrons are housed in the K shell of the Beryllium atom, while the other two are housed in the L shell.
Using the Bohr Model to Deduce Lewis Structure
The Lewis structure of the atom is a graphical representation of an atom’s structure. Unlike the Bohr model, however, it simply depicts the valence electrons.
The atomic symbol represents the nucleus of an atom, whilst the dots indicate the electrons. As a result, the electron dot structure is another name for this model.
The Beryllium atom has two valence electrons, as mentioned in the previous section, and the atomic symbol for Beryllium is Be. As a result, the Lewis structure of Beryllium is as follows:
Beryllium has a number of key properties, including:
• It was discovered by Nicolas-Louis Vauquelin, a French chemist.
• It has a metallic white-gray look.
• Beryllium has melting and boiling temperatures of 1560 K and 2742 K, respectively.
• Beryllium has a density of 1.85 g/cm3 at ambient temperature and 1.69 g/cm3 when melted.
• Beryllium exists in three different isotopes in nature. They are 7Be, 9Be, and 10Be, respectively.
Beryllium’s nucleus has four protons and five neutrons, with four electrons revolving around it, according to the Bohr model.
An atom’s atomic number is always equal to the number of protons and electrons it contains.
The formula for calculating the number of neutrons in an atom is:
The number of neutrons is equal to the atomic mass of the atom rounded up to the nearest whole number – the number of protons in the atom.
The formula 2n2 is used to calculate an atom’s electron carrying capacity.
Two electrons are stored in the K shell while the remaining two electrons are housed in the L shell in the Beryllium atom.
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