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1 August, 07:21

Of the following elements, which is the LEAST reactive? A. C B. H C. Li D. He

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  1. 1 August, 08:21
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    noble gases since they have a full valence shell and thus require a lot of energy in order to form bonds.
  2. 1 August, 09:21
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    Definitely D: Helium

    Explanation:

    The Electronegativity or pauling is its reactivity, aka the more likely it is to steal an electron. so if it doesnt have ANY reactivity like helium, there is no chance it will steal one. therefore its helium.
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