The number of bent-shaped molecule(s) from the following is_______?
SO2, O3, I3-, N3-
SO2, O3, I3-, N3-
Solution and Explanation
1. SO2 (Sulfur Dioxide):
SO2 has a bent molecular geometry due to the lone pair of electrons on the sulfur atom, which causes electron pair repulsion and distorts the shape.
2. O3 (Ozone):
O3 has a central oxygen atom surrounded by one lone pair and three bonding electrons. This results in a bent molecular geometry, as the lone pair causes distortion in the structure.
3. I3- (Triiodide Ion):
I3- has a linear geometry. The central iodine atom has three lone pairs, and the bonding electrons are delocalized, maintaining a linear structure.
4. N3- (Azide Ion):
N3- is a linear molecule, as it consists of a chain of three nitrogen atoms connected by alternating double and single bonds, with delocalization of electrons across the structure.
Conclusion:
- Bent: SO2, O3
- Linear: I3-, N3-
So, Two molecules/ions, SO2 and O3, have a bent shape. The other two, I3- and N3-, have a linear form.
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Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.