Practice Periodic Table in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

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.

A map of all elements organized so similar ones are in the same column.

Example 1

easy
Using the periodic table, predict whether silicon (Si) is a metal, nonmetal, or metalloid. Justify your answer.

Example 2

medium
Arrange the following elements in order of increasing atomic radius: \text{Na}, \text{Mg}, \text{K}, \text{Al}.

Example 3

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

Example 4

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