Chemistry
Grade-9
Easy

Question

How many groups are there in the modern periodic table?

  1. 8
  2. 9
  3. 18
  4. 17

Hint:

There are 18 groups.

The correct answer is: 18


    • Modern day periodic was discovered by Mendeleev.
    • In the periodic table there are 118 elements.
    • The vertical columns in the periodic table are called groups,18 in number.
    • The horizontal rows in the periodic table are called periods, 7 in number.

    Related Questions to study

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    Choose the correct statement.

    1. The vertical column in the periodic table is called a period.
    2. The vertical column in the periodic table is called a group.
    3. The horizontal row in the periodic table is not called a period.
    4. None of the above

    Choose the correct statement.

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    Which one is correct about Mendeleev's periodic law?

    1. Properties of elements are the periodic function of their atomic mass.
    2. Physical and chemical properties of elements are periodic functions of their atomic number.
    3. Physical properties of elements are the periodic functions of their atomic mass.
    4. Chemical properties of elements are the periodic function of their atomic number.

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    Elements in the same group have __________.

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    This group of elements sit along a stair step line on the periodic table and have properties of both metals and non-metals:

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