molecules are held together only by weak van der Waals forces. Q5. Explain the anomalous behavior of Oxygen. Oxygen differs from other group members due to: Small atomic size. High electronegativity. Absence of vacant d-orbitals. Ability to form strong multiple bonds. Q6. Which is a stronger oxidizing agent: O3cap O sub 3 O2cap O sub 2 Answer: Ozone ( O3cap O sub 3
🎯 Board exams prioritize "Why" questions. Always link your answer to electronic configuration, size, or electronegativity. molecules are held together only by weak van
molecules to form strong intermolecular hydrogen bonds. Sulfur has low electronegativity and cannot form hydrogen bonds; therefore, H2Scap H sub 2 cap S Oxygen differs from other group members due to:
Despite having a lower electron gain enthalpy than Chlorine, Fluorine is a stronger oxidizing agent due to: Its very low bond dissociation enthalpy ( bond is weak). Its extremely high hydration enthalpy. Q8. Why are Halogens colored? Ability to form strong multiple bonds
Nitrogen exists as a diatomic molecule with a triple bond between the two atoms (
). This bond has an exceptionally high bond dissociation enthalpy (941.4 kJ/mol), making it very difficult to break under normal conditions. Q2. Why is NH3cap N cap H sub 3 a stronger base than PH3cap P cap H sub 3
) is a stronger oxidizing agent. It decomposes easily to liberate nascent oxygen ( O3→O2+Ocap O sub 3 right arrow cap O sub 2 plus cap O ), which reacts readily with other substances. Group 17: The Halogens