
What atomic or hybrid orbitals make up the sigma bond between \[I\] and \[Cl\] in iodine pentachloride, \[IC{l_5}\]?
Answer
432k+ views
Hint: The intermixing of two or more pure atomic orbitals of an atom with almost the same energy to give the same number of identical and degenerate new types of orbitals is known as hybridization. The new orbitals formed are also known as hybrid orbitals.
Formula to find the hybridization of a molecule is given by
\[Hybridisation = Number{\text{ }}of{\text{ }}\sigma {\text{ }}bonds + {\text{ }}Number{\text{ }}of{\text{ }}lone{\text{ }}pairs\]
Complete answer:
If the sum is \[2\] \[ \to \] hybridization − \[sp\]
If the sum is \[3\] \[ \to \] hybridization − \[s{p^2}\]
If the sum is \[4\] \[ \to \] hybridization − \[s{p^3}\]
If the sum is \[5\] \[ \to \] hybridization− \[s{p^3}d\]
If the sum is \[6\] \[ \to \] hybridization− \[s{p^3}{d^2}\]
COMPLETE STEP BY STEP ANSWER-
Lewis dot structure of \[IC{l_5}\]:
Considering central metal atom, \[I\]
$ Number{\text{ }}of{\text{ }}lone{\text{ }}pairs = 1 \\
Number{\text{ }}of{\text{ }}bond{\text{ }}pairs = 5 \\ $
\[Hybridisation = 1 + 5 = 6\]
Therefore, \[I - Cl\] bond is \[s{p^3}{d^2}\] hybridized.
About \[IC{l_5}\],
Hybridisation-\[s{p^3}{d^2}\]
Geometry- Octahedral
Shape- Square pyramidal
Note:
You can expect bond angles of \[{90^ \circ }\] and \[{180^ \circ }\].
Also note that when forming hybrid orbitals, you use \[n\] atomic orbitals to make \[n\] hybrid orbitals, where \[n\] is the total amount of orbitals. Here, in case of \[IC{l_5}\], \[n = 6\]
Formula to find the hybridization of a molecule is given by
\[Hybridisation = Number{\text{ }}of{\text{ }}\sigma {\text{ }}bonds + {\text{ }}Number{\text{ }}of{\text{ }}lone{\text{ }}pairs\]
Complete answer:
If the sum is \[2\] \[ \to \] hybridization − \[sp\]
If the sum is \[3\] \[ \to \] hybridization − \[s{p^2}\]
If the sum is \[4\] \[ \to \] hybridization − \[s{p^3}\]
If the sum is \[5\] \[ \to \] hybridization− \[s{p^3}d\]
If the sum is \[6\] \[ \to \] hybridization− \[s{p^3}{d^2}\]
COMPLETE STEP BY STEP ANSWER-
Lewis dot structure of \[IC{l_5}\]:

Considering central metal atom, \[I\]
$ Number{\text{ }}of{\text{ }}lone{\text{ }}pairs = 1 \\
Number{\text{ }}of{\text{ }}bond{\text{ }}pairs = 5 \\ $
\[Hybridisation = 1 + 5 = 6\]
Therefore, \[I - Cl\] bond is \[s{p^3}{d^2}\] hybridized.
About \[IC{l_5}\],
Hybridisation-\[s{p^3}{d^2}\]
Geometry- Octahedral
Shape- Square pyramidal
Note:
You can expect bond angles of \[{90^ \circ }\] and \[{180^ \circ }\].
Also note that when forming hybrid orbitals, you use \[n\] atomic orbitals to make \[n\] hybrid orbitals, where \[n\] is the total amount of orbitals. Here, in case of \[IC{l_5}\], \[n = 6\]
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