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Questions and Answers
What is the octet rule?
What is the octet rule?
Which of the following is true about ionic bonding?
Which of the following is true about ionic bonding?
What are some properties of ionic compounds?
What are some properties of ionic compounds?
What is the general formula for predicting molecular shapes?
What is the general formula for predicting molecular shapes?
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Which of the following is a common intermolecular force?
Which of the following is a common intermolecular force?
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What does Valence Bond Theory explain?
What does Valence Bond Theory explain?
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What is the defining characteristic of covalent compounds?
What is the defining characteristic of covalent compounds?
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Which type of bonding involves the donation of both shared electrons by only one atom?
Which type of bonding involves the donation of both shared electrons by only one atom?
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What is the term used to describe a molecule that can be represented by two or more Lewis structures?
What is the term used to describe a molecule that can be represented by two or more Lewis structures?
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What is a common property of covalent compounds?
What is a common property of covalent compounds?
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Study Notes
Chemical Bonding
- The octet rule states that atoms lose, gain, or share electrons to achieve a full outer energy level of eight electrons, resulting in a stable configuration.
Ionic Bonding
- Ionic bonding involves the transfer of electrons from one atom to another, resulting in the formation of ions with opposite charges that attract each other.
Properties of Ionic Compounds
- Ionic compounds are typically hard, brittle, and have high melting points due to the strong electrostatic attractions between oppositely charged ions.
- They are also usually soluble in water and good conductors of electricity when dissolved.
Molecular Shape
- The VSEPR (Valence Shell Electron Pair Repulsion) theory is used to predict the shape of molecules, with the general formula being AXn, where A is the central atom and n is the number of electron domains.
Intermolecular Forces
- Hydrogen bonding is a common intermolecular force that occurs when a hydrogen atom bonded to a highly electronegative atom (such as oxygen, nitrogen, or fluorine) forms a weak bond with another electronegative atom.
Valence Bond Theory
- Valence Bond Theory explains how atomic orbitals combine to form molecular orbitals, which in turn determine the shape and bonding of molecules.
Covalent Compounds
- The defining characteristic of covalent compounds is that they involve the sharing of one or more pairs of electrons between atoms.
- Covalent compounds are typically soft and flexible, with low melting points, and are often poor conductors of electricity.
Dative Covalent Bonding
- Dative covalent bonding, also known as coordinate covalent bonding, involves the donation of both shared electrons by only one atom.
Resonance
- Resonance occurs when a molecule can be represented by two or more Lewis structures, indicating that the electrons are delocalized and not fixed in a single position.
Covalent Compound Properties
- Covalent compounds are often volatile, meaning they can easily evaporate, and are typically insoluble in water.
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Description
Test your knowledge of chemical bonding and structure in this quiz based on the Addis Ababa Education Bureau's curriculum for Grade 11 Chemistry, Unit 3. Explore concepts like the Octet Rule, noble gases, and types of chemical bonding.
