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3 June, 17:56

How does helium differ from the elements in its group?

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  1. 3 June, 18:01
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    Helium only have 2 electrons in its valence shell. On the other hand the elements in its group have 8 electrons in its valence shell. So the difference is the amount of electrons each has.
  2. 3 June, 18:11
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    Helium only has 2 electrons in its outermost shell (valence shell), while the other elements in its group (called the noble gases) have 8 electrons in their outermost shell (valence shell.)
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