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NEETChemistryClassification of Elements and Periodicity in Properties

Why do noble gases exhibit very low chemical reactivity?

Options

  1. AThey have a high electron gain enthalpy.
  2. BThey readily add electrons to their valence shell.
  3. CTheir valence shell orbitals are completely filled.
  4. DThey readily lose electrons.

Correct answer

C. Their valence shell orbitals are completely filled.

Step-by-step solution

Noble gases exhibit very low chemical reactivity because all the orbitals in the valence shell are completely filled by electrons.

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