Why does $AlC{l_3}$ not show back bonding?
Answer
279k+ views
Hint: Compounds with the formula $AlC{l_3}$ are known as aluminium chloride or aluminium trichloride. They are made up of aluminium and chlorine atoms in a $1:3$ ratio, with one shape containing six hydration waters. Both are white solids, but samples frequently contain iron$(III)$ chloride, which gives them a yellow appearance.
Complete answer:
When one atom in a compound has a lone pair of electrons and the other has empty orbitals next to each other, back bonding occurs. Because pi-bonding occurs after the formation of a sigma bond, a compound with back bonding has pi-bonding characteristics.
Several chemical compounds exhibit back bonding, which is a form of resonance. Back bonding is considered to give chemical compounds more stability. It is also considered to have an effect on the molecule's overall dipole moment and hybridization.
Back bonding happens when the orbitals of small atoms are the same dimension. $Al$ and $Cl$ have larger $3p$ orbitals than other elements. As a result, back bonding does not happen in $AlC{l_3}$ . Dimerization completes the octet of $Al$ in this case. The $3p$ -orbitals of $Al$ and $Cl$ are comparatively larger in dimension, which increases the bond length and prevents back bonding from achieving the double bond character. One of the $Cl$ atom's lone pairs is donated to the $Al$ atom's empty $3p$ orbital in other $AlC{l_3}$ molecules.
Note:
$AlC{l_3}$ is a covalent compound rather than an ionic one. Since the $Al$ atom has a higher polarising force, the cl electron is readily attracted to it, resulting in electron sharing. It has a covalent bond. $A{l^{3 + }}$ is a strongly charged ion that can significantly polarise the electron clouds in $Cl$.
Complete answer:
When one atom in a compound has a lone pair of electrons and the other has empty orbitals next to each other, back bonding occurs. Because pi-bonding occurs after the formation of a sigma bond, a compound with back bonding has pi-bonding characteristics.
Several chemical compounds exhibit back bonding, which is a form of resonance. Back bonding is considered to give chemical compounds more stability. It is also considered to have an effect on the molecule's overall dipole moment and hybridization.
Back bonding happens when the orbitals of small atoms are the same dimension. $Al$ and $Cl$ have larger $3p$ orbitals than other elements. As a result, back bonding does not happen in $AlC{l_3}$ . Dimerization completes the octet of $Al$ in this case. The $3p$ -orbitals of $Al$ and $Cl$ are comparatively larger in dimension, which increases the bond length and prevents back bonding from achieving the double bond character. One of the $Cl$ atom's lone pairs is donated to the $Al$ atom's empty $3p$ orbital in other $AlC{l_3}$ molecules.
Note:
$AlC{l_3}$ is a covalent compound rather than an ionic one. Since the $Al$ atom has a higher polarising force, the cl electron is readily attracted to it, resulting in electron sharing. It has a covalent bond. $A{l^{3 + }}$ is a strongly charged ion that can significantly polarise the electron clouds in $Cl$.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are

Why should electric field lines never cross each other class 12 physics CBSE

An electrostatic field line is a continuous curve That class 12 physics CBSE

What are the measures one has to take to prevent contracting class 12 biology CBSE

Suggest some methods to assist infertile couples to class 12 biology CBSE

Amniocentesis for sex determination is banned in our class 12 biology CBSE

Trending doubts
The lightest gas is A nitrogen B helium C oxygen D class 11 chemistry CBSE

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Change the following sentences into negative and interrogative class 10 english CBSE

Which place is known as the tea garden of India class 8 social science CBSE

What is pollution? How many types of pollution? Define it

Write a letter to the principal requesting him to grant class 10 english CBSE

Give 10 examples for herbs , shrubs , climbers , creepers

Draw a diagram of a plant cell and label at least eight class 11 biology CBSE
