Representative elements

Representative element

Facts:

• Representative elements are called group a
• Example: 1A

Facts:

• Groups 1a-2a and 13a-18a are representative elements
• These elements include: metals, metalloids, and nonmetals

Facts:

• Group 1a is alkali metals
• Group 2a is alkaline earth metals
• Group 13a-15a is post-transition metals

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Transition element

Facts:

• Transition elements are called group b
• Example: 3b

Facts:

• Group 3b-12b and inner transition elements are transition elements
• These elements only include: metals

Facts:

• There are two series of inner transition elements
• The first series is lanthanides
• The second series is called actinides
• This element is a rare-earth element

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