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12 April, 13:00

Why is helium less reactive than hydrogen?

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  1. 12 April, 15:43
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    Each helium atom has a full valence electron shell, but each hydrogen atom only has one valence electron.
  2. 12 April, 16:38
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    Each helium atom has a full valence electron shell, but each hydrogen atom only has one valence electron. Explanation: ... H has one electron in the outer shell therefore its reactive by gaining or losing the outermost electron. therefore H is more reactive than He as it has an incomplete valence electron shell.
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