(a)
Interpretation: Using VSEPR theory to predict bond angles in given molecules.
Concept introduction: The Valence Shell Electron Pair Repulsion Theory abbreviated as VSEPR theory is based on the premise that there is repulsion between the pairs of electrons in all atoms.
(a)
Answer to Problem 26LC
Bond angles for the covalently bonded molecules are:
Methane =
Explanation of Solution
We will use the formula, that is
Number of electrons
Here, V= number of valence electrons present in the central atoms.
N= number of monovalent atoms bound to central atoms
C= charge of the cation
A= charge of the anion
Methane: in the given molecule we have carbon as the central atom and there are four hydrogens as monovalent atoms,
By formula we get
As now we know the hybridization will be
So, the bond angle for the tetrahedral geometry is
(b)
Interpretation: Using VSEPR theory to predict bond angles in given molecules.
Concept introduction: The Valence Shell Electron Pair Repulsion Theory abbreviated as VSEPR theory is based on the premise that there is repulsion between the pairs of electrons in all atoms.
(b)
Answer to Problem 26LC
Bond angles for the covalently bonded molecules are:
Ammonia =
Explanation of Solution
Ammonia: Now in this nitrogen is the central atom and there are three hydrogens as monovalent atoms.
Now, from the formula we get
So, the hybridization will be
And the Bond angle for this is
(c)
Interpretation: Using VSEPR theory to predict bond angles in given molecules.
Concept introduction: The Valence Shell Electron Pair Repulsion Theory abbreviated as VSEPR theory is based on the premise that there is repulsion between the pairs of electrons in all atoms.
(c)
Answer to Problem 26LC
Bond angles for the covalently bonded molecules are:
Water =
Explanation of Solution
Water: Now in this water oxygen is the central atom and there are two hydrogens as monovalent atoms.
Now, from the formula we get
The hybridization will be
The bond angle for the pyramidal geometry is
The bond angle reduces further due to greater lone pair repulsions.
Chapter 8 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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