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Question

Which group on the periodic table is the least reactive? Why?


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Solution

Noble Gases

  • Group 18 of the periodic table exhibits lowest reactivity.
  • Elements with a full outermost valence shell, i.e., those with eight electrons in the outer shell, such as helium, neon, radon and others are the least reactive.
  • Noble gases cannot gain or lose valence electrons by interacting with other elements, making them most stable or least reactive.

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