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ChemistryChemistry
1 March, 16:29

What do helium (He), neon (Ne), and argon (Ar) have in common?

A. They have the same number of electron energy shells.

B. They are all Halogens.

C. They have the same number of electrons.

D. They are all Noble gases.

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Answers (2)
  1. 1 March, 17:46
    0
    D-They are all noble gases

    Explanation:

    They have the same valency
  2. 1 March, 18:08
    0
    The answer is: D

    Explanation:

    A. They have the same number of electron energy shells. Is false, all the elements are in different periods so, they have different number of lectron energy shells.

    B. They are all Halogens. No, is wrong, halogens are F, Cl, Br

    C. They have the same number of electrons. is wrong, if they had the same number of electrons they must be they same element and they aren't the same.

    D. They are all Noble gases. Yes, it's true they are noble gases, they are the first group in the periodic table from the right.
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Home » Chemistry » What do helium (He), neon (Ne), and argon (Ar) have in common? A. They have the same number of electron energy shells. B. They are all Halogens. C. They have the same number of electrons. D. They are all Noble gases.
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