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    Chemistry
    Grade-9
    Easy

    Question

    Elements in a period

    1. Are arranged alphabetically
    2. Have identical properties
    3. Belong to the same family
    4. Have the same number of electron shells

    Hint:

    Elements in a period have same number of electron energy levels.

    The correct answer is: Have the same number of electron shells

      • Elements in a period have same number of electron shells.
      • From left to right in a period atomic number increases by 1.
      • From left to right metallic character decreases.

      Related Questions to study

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      Choose the incorrect statement about the trends in the properties of the elements of a period going from left to right from the following statements.

      1. The oxides become more acidic.
      2. The elements become less metallic.
      3. The number of valence electrons increases.
      4. Atoms start to lose their electrons more easily.

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      Which elements have the most similar chemical properties?

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      Each element is unique based on its number of protons, also known as the

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      Which color on the image of the periodic table corresponds with the noble gases?

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      What information does the mass number convey?

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      2. The number of neutrons.
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