Course Textbook Chapters Course Experiments Periodic Table Acids and Bases Reference Safety

Periodic Table - Element Discovery Dates

Colour by: element type/state of matter (PDF) | approx discovery date (PDF)

Hover mouse over group names and elements for extra information.

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6

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56

*

71

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7

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**

103

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118

* Lanthanoids

57

58

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70

** Actinoids

89

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102

Key

Ancient

1669-1800

1801-1850

1851-1900

1901-1950

1951-2000

2001-present

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Course Textbook Chapters Course Experiments Periodic Table Acids and Bases Reference Safety

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