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    Chemistry
    Grade-9
    Easy

    Question

    As you move left to right on a row or period, what happens?

    1. Atomic number increases by 1
    2. Electrons decrease
    3. Number of shells decreases
    4. Nothing

    hintHint:

    Atomic number increases.

    The correct answer is: Atomic number increases by 1

      • The horizontal rows in a periodic table is called periods.
      • The vertical rows in a periodic table is called columns.
      • As we move from left to write in a periodic table atomic number increases by 1.

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