Concept explainers
Which of the following pairs of atomic orbitals of adjacent nuclei can overlap to form a sigma bond? Which overlap to form a pi bond? Which cannot overlap (no bond)? Consider the x axis to be the internuclear axis, that is, the line joining the nuclei of the two atoms, (a) 1s and 1s, (b) 1s and 2px. (c) 2px and 2py, (d) 3py and 3py, (e) 2px and 2px. (f) 1s and 2s.
Interpretation:
From the given set of orbitals, the ones that forms sigma bond, the ones that forms pi bond and the ones that doesn’t form any bond have to be identified.
Concept Introduction:
There are two different types of chemical bond – sigma bond and pi bond. A bond between two atoms is known as sigma bond if the atomic orbitals of the atoms overlap end to end – it is also called head on overlapping. A bond is said to pi bond if it is formed by sideways overlapping of atomic orbitals of the atoms. This is also known as lateral overlapping.
Answer to Problem 7.61QP
Solution:
S.No |
Set of atomic orbitals | Type of bond formation |
(a) |
| Sigma bond |
Explanation of Solution
Two
End to end overlapping of two
Figure 1
For example, the sigma bond between two Hydrogen atoms formed by end to end overlapping of
Interpretation:
From the given set of orbitals, the ones that forms sigma bond, the ones that forms pi bond and the ones that doesn’t form any bond have to be identified.
Concept Introduction:
There are two different types of chemical bond – sigma bond and pi bond. A bond between two atoms is known as sigma bond if the atomic orbitals of the atoms overlap end to end – it is also called head on overlapping. A bond is said to pi bond if it is formed by sideways overlapping of atomic orbitals of the atoms. This is also known as lateral overlapping.
Answer to Problem 7.61QP
Solution:
S.No |
Set of atomic orbitals | Type of bond formation |
(b) |
| Sigma bond |
Explanation of Solution
End to end overlapping of
Figure 2
Interpretation:
From the given set of orbitals, the ones that forms sigma bond, the ones that forms pi bond and the ones that doesn’t form any bond have to be identified.
Concept Introduction:
There are two different types of chemical bond – sigma bond and pi bond. A bond between two atoms is known as sigma bond if the atomic orbitals of the atoms overlap end to end – it is also called head on overlapping. A bond is said to pi bond if it is formed by sideways overlapping of atomic orbitals of the atoms. This is also known as lateral overlapping.
Answer to Problem 7.61QP
Solution:
S.No |
Set of atomic orbitals | Type of bond formation |
(c) |
| No bond formation |
Explanation of Solution
Shape of
Figure 3
Interpretation:
From the given set of orbitals, the ones that forms sigma bond, the ones that forms pi bond and the ones that doesn’t form any bond have to be identified.
Concept Introduction:
There are two different types of chemical bond – sigma bond and pi bond. A bond between two atoms is known as sigma bond if the atomic orbitals of the atoms overlap end to end – it is also called head on overlapping. A bond is said to pi bond if it is formed by sideways overlapping of atomic orbitals of the atoms. This is also known as lateral overlapping.
Answer to Problem 7.61QP
Solution:
S.No |
Set of atomic orbitals | Type of bond formation |
(d) |
| Pi bond |
Explanation of Solution
The
Sideways overlapping of two
Figure 4
Interpretation:
From the given set of orbitals, the ones that forms sigma bond, the ones that forms pi bond and the ones that doesn’t form any bond have to be identified.
Concept Introduction:
There are two different types of chemical bond – sigma bond and pi bond. A bond between two atoms is known as sigma bond if the atomic orbitals of the atoms overlap end to end – it is also called head on overlapping. A bond is said to pi bond if it is formed by sideways overlapping of atomic orbitals of the atoms. This is also known as lateral overlapping.
Answer to Problem 7.61QP
Solution:
S.No |
Set of atomic orbitals | Type of bond formation |
(e) |
| Pi bond |
Explanation of Solution
The
Lateral overlapping of two
Figure 5
Interpretation:
From the given set of orbitals, the ones that forms sigma bond, the ones that forms pi bond and the ones that doesn’t form any bond have to be identified.
Concept Introduction:
There are two different types of chemical bond – sigma bond and pi bond. A bond between two atoms is known as sigma bond if the atomic orbitals of the atoms overlap end to end – it is also called head on overlapping. A bond is said to pi bond if it is formed by sideways overlapping of atomic orbitals of the atoms. This is also known as lateral overlapping.
Answer to Problem 7.61QP
Solution:
S.No |
Set of atomic orbitals | Type of bond formation |
(f) |
| Sigma bond |
Explanation of Solution
Overlapping of two s-orbitals always result in sigma bond formation as two s-orbitals overlap head to head as follows –
End to end overlapping of
Figure 6
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Chapter 7 Solutions
Chemistry: Atoms First
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