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🧪 Chemistry  ·  p-Block Elements (Groups 15 to 18)  ·  NEET & JEE

Why is nitrogen able to form multiple oxides (N<sub>2</sub>O, NO, N<sub>2</sub>O<sub>3</sub>, NO<sub>2</sub>, N<sub>2</sub>O<sub>4</sub>, N<sub>2</sub>O<sub>5</sub>)?

Answer: Nitrogen has multiple stable oxidation states (-3 to +5) because of variable bonding with oxygen.

  • A Nitrogen has multiple stable oxidation states (-3 to +5) because of variable bonding with oxygen
  • B Nitrogen possesses accessible d orbitals that allow octet expansion in typical laboratory settings
  • C Nitrogen is generally the most reactive element in the entire periodic table under usual circumstances
  • D Nitrogen forms mainly ionic bonds with oxygen in each of these oxides according to most researchers

Correct answer: A. Nitrogen has multiple stable oxidation states (-3 to +5) because of variable bonding with oxygen

Explanation: Nitrogen's small size and availability of oxidation states from -3 to +5 allow diverse stable bonding arrangements with oxygen.

Xenon tetrafluoride XeF4: a central xenon bonded to four fluorine atoms in a square-planar arrangement with two lone pairs above and below, Xe-F bond length 194 pm.

Xenon tetrafluoride (XeF4) has six electron domains around xenon — four Xe–F bonds plus two lone pairs. The lone pairs occupy opposite axial positions, leaving the four fluorine atoms in a square-planar shape (Xe–F ≈ 194 pm). Image: ChemSim, Public Domain, via Wikimedia Commons.

Concept context

Covers the nitrogen family (Group 15), oxygen family (Group 16), halogens (Group 17), and noble gases (Group 18). One of the highest-weightage inorganic chapters in NEET and JEE - includes preparation and properties of HNO₃, H₂SO₄, interhalogens, and xenon compounds.

Read the full p-Block Elements (Groups 15 to 18) notes →