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Questions and Answers
What is the Lewis dot formula for CO2?
Why does NaCl not conduct electricity in the solid state?
Which of the following species exhibits a bond that is nondirectional?
Which of the following is an exception to the octet rule?
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According to Fajans rule, which combination favors a covalent bond?
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What type of bond involves the equal sharing of electrons between two atoms?
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In an ionic compound, which factor leads to the greatest degree of covalent bonding?
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What causes the distortion of the shape of an anion in polarisation?
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Study Notes
Lewis Dot Formula
- The Lewis dot formula for CO2 is :O=C=O:
Conductivity of NaCl
- NaCl (sodium chloride) does not conduct electricity in the solid state because the ions are rigidly held in place and are not free to move.
Nondirectional Bonds
- The hydrogen atom exhibits a nondirectional bond because its single electron is in the 1s orbital, which is spherical in shape.
Exceptions to the Octet Rule
- Nitrogen (NF3) is an exception to the octet rule because it has a valence shell that is not filled.
Fajans Rule
- According to Fajans' rule, a high positive charge on the cation and a high polarizability of the anion favor a covalent bond.
Covalent Bonds
- A covalent bond involves the equal sharing of electrons between two atoms, typically between two non-metal atoms.
Ionic Compounds
- In an ionic compound, the factor that leads to the greatest degree of covalent bonding is high charge density on the cation.
Polarisation
- The distortion of the shape of an anion in polarisation is caused by the presence of a high-charge-density cation, which pulls the electron cloud towards it.
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Description
Test your knowledge of chemical bonding concepts with this quiz based on the Prayas JEE 3.0 (2024) curriculum. Questions cover Lewis diagrams, Lewis dot formulas, exceptions to the octet rule, and more.
