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p-Block Group 16 Elements: The Oxygen Family — Important Topics

JEE Advanced · Chemistry

Most important topics from p-Block Group 16 Elements: The Oxygen Family for JEE Advanced Chemistry 2026 — high-weightage areas based on previous year analysis.

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An infographic summarizing key properties and trends of Group 16 elements: Oxygen, Sulfur, Selenium, Tellurium, Polonium. Includes general electronic configuration, physical state, atomicity, and tren
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p-Block Group 16 Elements: The Oxygen Family — Syllabus & Topics

Topics covered in p-Block Group 16 Elements: The Oxygen Family for JEE Advanced Chemistry.

Topics in p-Block Group 16 Elements: The Oxygen Family

1

Group Characteristics and Trends

  • General electronic configuration: ns²np⁴ with 6 valence electrons
  • Atomic radii increase down the group: O < S < Se < Te < Po
  • Ionization enthalpy decreases down the group: O > S > Se > Te > Po
2

Oxidation States and Chemical Bonding

  • Common oxidation states: O (-2), S (-2, +2, +4, +6), Se (-2, +2, +4, +6), Te (-2, +2, +4, +6), Po (+2, +4, +6)
  • Oxygen typically shows -2 oxidation state due to high electronegativity
  • Higher oxidation states become more stable down the group due to decreasing electronegativity
3

Hydrides of Group 16 Elements

  • General formula: H₂E where E = O, S, Se, Te, Po
  • Bond angle decreases: H₂O (104.5°) > H₂S (92.1°) > H₂Se (91°) > H₂Te (90°)
  • Boiling points: H₂O (373K) > H₂Te (269K) > H₂Se (232K) > H₂S (213K)
4

Oxygen and Its Compounds

  • Oxygen constitutes 21% by volume and 23% by mass of atmosphere
  • Laboratory preparation: 2KClO₃ → 2KCl + 3O₂ (with MnO₂ catalyst)
  • Industrial preparation: Fractional distillation of liquid air

Key Concepts

Atomic radius increases (O < SOxygen primarily showsAll elements form hydrides H₂E (whereOxygen exists as O₂ (paramagnetic)Sulphur exists in multiple allotropic forms

Frequently Asked Questions

What topics are covered in p-Block Group 16 Elements: The Oxygen Family for JEE Advanced?
p-Block Group 16 Elements: The Oxygen Family is an important chapter in JEE Advanced Chemistry. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Group Characteristics and Trends, Oxidation States and Chemical Bonding, Hydrides of Group 16 Elements, Oxygen and Its Compounds.
How important is p-Block Group 16 Elements: The Oxygen Family for JEE Advanced?
p-Block Group 16 Elements: The Oxygen Family is a frequently tested chapter in JEE Advanced Chemistry. Questions from this chapter appear regularly in previous year papers. There are 50 practice questions available for this chapter.
How to prepare p-Block Group 16 Elements: The Oxygen Family for JEE Advanced?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.

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