Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETChemistryp Block Elements (Group 15, 16, 17 & 18)

Why are noble gases generally least reactive?

Options

  1. AThey have completely filled valence shells
  2. BThey have high ionization enthalpy
  3. CThey have low electron gain enthalpy
  4. DThey have strong covalent bonds

Correct answer

A. They have completely filled valence shells

Step-by-step solution

Noble gases are generally the least reactive because they have completely filled ns²np⁶ electronic configurations in their valence shells.

Practice p Block Elements (Group 15, 16, 17 & 18) on Quantrex Academy →

More from p Block Elements (Group 15, 16, 17 & 18)

Identify the incorrect statement from the following : 2026Given below are two statements: Statement-I : Heating NaCl with concentrated H₂ SO₄ and MnO₂ results in oxidation of Mn. Statement-II : Heating NaI with concentrated H₂ SO₄ and MnO 2026Given below are two statements: Statement I : Like nitrogen that can form ammonia, arsenic can form arsine. Statement II : Antimony cannot form antimony pentoxide. In the light of 2025Match List - I with List-II array llll & List-I & & List-II . & XeO ₃ & I. & sp ^3 ~d , linear . & XeF ₂ & II. & sp ^3 ; pyramidal . & XeOF ₄ & III. & sp ^3 ~d ^3 ; distorted octah 2025Among Group 16 elements, which one does NOT show -2 oxidation state? 2024Identify the incorrect statement. 2024The products A and B obtained in the following reactions, respectively, are aligned & 3 ROH + PCl ₃ 3 RCl + A & ROH + PCl ₅ RCl + HCl + B aligned 2024Given below are two statements: Statement I: The boiling point of hydrides of Group 16 elements follow the order H ₂ O H ₂ Te H ₂ Se H ₂ ~S . Statement II: On the basis of molecula 2024 Full p Block Elements (Group 15, 16, 17 & 18) list All NEET PYQs