Periodic Table Chemistry Example 3

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Example 3

easy
Which group of the periodic table contains the noble gases? Why are they chemically inert?

Solution

  1. 1
    Noble gases are in Group 18 (the far right column).
  2. 2
    They have a complete valence shell (8 electrons, or 2 for helium), making them extremely stable and unreactive.

Answer

GroupĀ 18Ā ā€”Ā fullĀ valenceĀ shellsĀ makeĀ themĀ inert.\text{Group 18 ā€” full valence shells make them inert.}
The stability of noble gases arises from their complete electron configurations. Other elements react in order to achieve similar configurations.

About Periodic Table

A systematic arrangement of all known chemical elements organized by increasing atomic number into rows (periods) and columns (groups), where elements in the same group.

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More Periodic Table Examples

Example 1 easy

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Example 2 medium

Arrange the following elements in order of increasing atomic radius: [formula], [formula], [formula]

Example 4 medium

An element is in Group 17 and Period 3 of the periodic table. What do the group and period tell you

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