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    Chemistry
    Grade-9
    Easy

    Question

    What happens to the number of shells as you move down a group?

    1. They decrease by 1
    2. They increase by 1
    3. They increase by 2
    4. Nothing

    Hint:

    Down the group shell increases by 1.

    The correct answer is: They increase by 1

      • The horizontal rows in a periodic table is called periods.
      • The vertical columns in a periodic table is called groups.
      • As we move from left to right atomic number increases by 1.
      • As we move down the group number of shell increases by 1.

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