In Redox reactions, the Oxidation Number (or Oxidation State) represents the total number of electrons an atom gains or loses to form a chemical bond. Let's look at the rules for some key elements.
Oxygen (O): Mostly -2 (except peroxides).
Nitrogen (N): Varies from -3 to +5.
Sulphur (S): Varies from -2 to +6.
Carbon (C): Varies from -4 to +4.
Oxygen is highly electronegative.
Nitrogen is highly versatile and can exhibit many oxidation states.
Sulphur also shows multiple oxidation states.
Carbon, being the king of organic chemistry, shows a wide range.
The most common oxidation number of oxygen in its compounds is -2. However, in peroxides, it is -1.
Electron Distribution in Carbon and Sodium Atoms
Write the electron distribution in carbon and sodium atoms. Carbon: 2,4 and Sodium: 2,8,1 — complete shell configuration with Bohr model for Class 9 Chemistry.
What are Electron Donating Groups (EDG) in Organic Chemistry?
Learn about Electron Donating Groups (EDG) in organic chemistry. Understand the inductive (+I) and mesomeric (+M) effects and how they activate the benzene ring.
Electron Dot Structure of Ethanoic Acid (Acetic Acid)
Learn how to draw the Lewis electron dot structure of Ethanoic Acid (CH3COOH). Understand the covalent bonding, double bonds, and lone pairs of oxygen.
Electron Dot Structure of Carbon Dioxide (CO₂)
Learn how to easily draw the electron dot structure (Lewis structure) for Carbon Dioxide (CO2). Understand the double covalent bonds between carbon and oxygen.
Electron Gain Enthalpy — Definition, Trend and Examples
Electron gain enthalpy is the enthalpy change when a neutral gaseous atom gains an electron. Chlorine has the most negative value (−349 kJ/mol). Periodic trend explained.
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