Bohr model of Nitrogen atom - How to draw Nitrogen(N) Bohr-Rutherford diagram?
The Bohr Model of Nitrogen(N) has a nucleus that contains 7 neutrons and 7 protons. This nucleus is surrounded by two-electron shells named K-shell and L-shell. The outermost shell in the Bohr diagram of Nitrogen contains 5 electrons that also called valence electrons.
|Name||Nitrogen Bohr Model|
|Number of neutrons||7|
|Number of protons||7|
|Number of electrons||7|
|Total electron shells||2|
|Electron in the First shell(K)||2|
|Electrons in the Second shell(L)||5|
|Total valence electrons in Nitrogen||5|
How to draw Bohr Model of Nitrogen(N)?
Bohr model describes the visual representation of orbiting electrons around the small nucleus. It used different electron shells such as K, L, M, N…so on. These shells hold a specific number of electrons, the electron shell which is closest to the nucleus has less energy and the electron shell which is farthest from the nucleus has more energy.
Bohr diagram is very interesting and easy to draw. Here, we will draw the Bohr diagram of the Nitrogen atom with some simple steps.
Steps to draw the Bohr Model of Nitrogen atom
1. Find the number of protons, electrons, and neutrons in the Nitrogen atom
Protons are the positively charged particles and neutrons are the uncharged particles, both these are constituents of the atom nuclei. Electrons are the negatively charged particles that orbit the nucleus of an atom
To find the number of protons an atom contains, just look at their atomic number.
If the atomic number of atom is 11, then proton will also be 11, if atomic number is 21, then proton will also be 21.
So, the atomic number for Nitrogen is 7, hence, the number of protons in the Nitrogen atom is also 7.
Now, to determine the number of neutrons in an atom, use this formula.
⇒ Number of neutrons in atom = Atomic mass of the atom(rounded to the nearest whole number) – Number of proton in an atom
For example, An atom have 30.944 atomic mass and 14 protons.
Then, to find the number of neutron, round the atomic mass to the near whole number, so, atomic mass 30.944 round to 31.
= (31 – 14 protons) = 17 number of neutrons in the atom
Now, To get the number of neutrons in a Nitrogen atom, look at its atomic mass which is 14.007 rounded to 14, and the number of protons in nitrogen is 7.
∴ Hence, the number of neutrons in Nitrogen atom = (14 – 7) = 7
It should be noted that “The number of electrons in a neutral atom is equal to the number of protons”.
So, the Nitrogen atom is neutral, hence, its number of electrons will be equal to the number of protons which is Seven as we already discussed.
⇒ The number of electrons in Nitrogen atom = 7
⇒ The number of protons in Nitrogen atom = 7
⇒ The number of neutrons in a Nitrogen atom = 7
2. Draw the nucleus of an atom
A nucleus is a dense and small region that contains the number of protons and neutrons of an atom.
In this step, we have to draw a small circle that consists of a number of protons and the number of neutrons of a Nitrogen atom.
3. Draw the First electron shell
“An electron shell may be thought of as an orbit followed by electrons around an atom’s nucleus.”
The first electron shell is also called the K-shell, this is the closest shell to the nucleus of an atom and can hold a maximum of two electrons.
As we know, Nitrogen atoms have a total of 7 electrons. So, put two electrons from it, in the first shell, next to each other.
We have successfully drawn the first shell of the Nitrogen atom that can hold 2 electrons. As the Nitrogen atom has a total of 7 electrons, and from 7 electrons we have used two electrons in the first shell.
∴ (7 – 2) = 5 electrons
Therefore, we are left with 5 electrons, let’s put them in the next shell of the nitrogen atom.
4. Draw the Second electron shell
The second shell also called the L-shell that can hold a maximum of 8 electrons. This shell is drawn after the first electron shell.
Since we already used two electrons in the first shell, now, we have to put the remaining 5 electrons in the second shell.
In the second electron shell, the electrons are added one at a time, starting from the top position then going in a clockwise direction.
In second shell, electrons are added one at a time in clockwise direction as a clock position – 12 o’clock, 3 o’clock, 6 o’clock, 9 o’clock positions.
Once you place the electrons one at a time to each of the four sides(Top – Right – Bottom – Left], start pairing or doubling them.
So, we have to put 5 remaining electrons of the Nitrogen atom in the second shell, hence, start from the top position, put electrons one at a time, and go in a clockwise direction(Top – Right – Bottom – Left). And, finally, start pairing.
Bohr model of the Nitrogen atom
That’s all, this is our Bohr model of the Nitrogen atom that contains 7 protons and 7 neutrons in the nucleus region, and 7 electrons are orbited around the nucleus, two electrons in the first shell, and five electrons in the second shell.
- Oxygen Bohr model
- Boron Bohr model
- Beryllium Bohr model
- Lithium Bohr model
- Helium Bohr model
- Carbon Bohr model
- Fluorine Bohr model
- Neon Bohr model
- Sodium Bohr model
- Magnesium Bohr model
- Silicon Bohr model
- Phosphorus Bohr model
- Sulfur Bohr model
- Chlorine Bohr model
- Argon Bohr model
- Aluminum Bohr model
- Potassium Bohr model
- Calcium Bohr model
- Bromine Bohr model
Find Valence electron of Nitrogen through its Bohr diagram
Valence electrons are found in the outermost shell of an atom and they can take participate in the formation of a chemical bond. These electrons have more energy compare to the inner shell electrons.
From the Bohr diagram of an atom, we can easily find the number of valence electrons in an atom by looking at its outermost shell.
So, we have to find a valence electron in the Nitrogen atom, for this, look at its Bohr diagram.
Bohr’s diagram of Nitrogen has only two electron shells (K and L), the inner shell is K-shell and the outermost shell is L-shell.
Hence, the electrons found in the L-shell of the Nitrogen atom are its valence electrons because it is the outermost shell that also called the valence shell.
The L-shell or outer shell of the Nitrogen Bohr model contains 5 electrons, therefore, the number of valence electrons in the Nitrogen atom is 5.
Electron dot diagram of a Nitrogen atom
Electron dot diagram also called lewis structure which represents the valence electrons of atoms.
As, from the Bohr diagram of Nitrogen, we got to know, it has 5 valence electrons.
So, just represent these 5 valence electrons around the Nitrogen atom as a dot.
The electron configuration of Nitrogen
“Electron configuration is the distribution of electrons of an atom or molecule in atomic or molecule orbitals”
Nitrogen has an atomic number of 7 and it contains a total number of 7 electrons. From the Bohr model of Nitrogen, we know, 2 electrons are in the K-shell and 5 electrons are in the L-shell.
So, based on the shell, the electronic configuration of the Nitrogen atom is [2, 5].
Or the electronic configuration of Nitrogen is 1s22s22p3 since it contains a total of 7 electrons, the first two-electron will go in 1s orbital, the next two in 2s orbital, and the remaining three electrons will go in 2p orbital.
S orbital can hold maximum of 2 electrons and P orbital can hold maximum of 6 electrons.
How many electron shells a Nitrogen Bohr model contains?
Electron shell also called energy level, you can find the number of electron shells for an element by knowing its period number in the periodic table.
The elements or atoms in the first period of the periodic table have one energy level or one electron shell, same as, the elements in the second period have two energy levels or two-electron shells and so on…
So, the Nitrogen atom belongs to the 2nd Period in the periodic table, hence, the number of electron shells for the Bohr model of Nitrogen will be 2 (K-shell and L-shell).
What is the outer shell of the Bohr diagram of the Nitrogen atom?
The outermost shell also called the valence shell, which contains valence electrons of the atom.
According to the Bohr diagram of Nitrogen, the outer shell is L-shell which contains 5 valence electrons.
Properties of Nitrogen
- It is the lightest member of the pnictogens family.
- It appears as colorless gas, liquid or solid.
- Its electronegativity at the Pauling scale is 3.04.
- It has a hexagonal crystal structure.
- It is discovered by Daniel Rutherford in 1772.
- The Bohr model of Nitrogen is drawn with only two electron shells, the first shell contains 2 electrons and the second shell contains 5 electrons.
- Nitrogen is neutral and its atomic number is 7, hence, the number of protons and electrons available for its Bohr diagram is also 7.
- The number of neutrons for the Bohr diagram of Nitrogen can be found by subtracting the number of protons from the atomic mass(rounded to the nearest whole).
- The electron configuration of Nitrogen in terms of the shell is [2, 5], or in normal form, it is [He] 2s2 2p3.