Why are noble gases generally unreactive?
ChemistryClass 9CBSEAnswered 12 May 2026
Answer
Noble gases (Group 18 elements) are generally unreactive because they have a complete outermost electron shell (an octet, or a duet for Helium). This stable electron configuration makes them chemically inert, as they have little tendency to gain, lose, or share electrons to form chemical bonds.
Suggested Q&A
Chemistry · Class 9- ChemistryClass 9What are polyatomic ions? Give examples for Class 9.
- ChemistryClass 9Discuss the role of the nucleus in determining the identity and stability of an atom.
- ChemistryClass 9What would be the charge of an atom that has 12 protons, 12 neutrons, and 10 electrons? Identify the element.
- ChemistryClass 9An element has an atomic number of 19. Predict its valency and explain your reasoning.
- ChemistryClass 9Explain the concept of 'electron cloud' in the modern atomic model, contrasting it with Bohr's fixed orbits.
- ChemistryClass 9What was Dalton's atomic theory, and which of its postulates have since been proven incorrect?