Download alkaline earth metals

Notes D 1.3
The periodic table is a map of the
elements.
The periodic table has distinct regions.
• Position of an element on the PT reveals
something about how reactive the element is.
• Elements in Groups 1 and 17 are especially
reactive.
• Group 18 (the Noble Gases) are least reactive.
Most elements are metals.
• Usually shiny
• Often conduct electricity and heat well
• Can be easily shaped and drawn into wire
Groups of Metals
• Alkali metals and alkaline earth metals –at
left of the PT and very reactive
• Transition metals—near the center of the PT
and include copper, gold, silver, and iron
• Rare earth metals– in the top row of the 2
rows of metals show outside the main body of
the PT
• Two bottom rows—separated from the table
to save space.
Nonmetals and metalloids have a wide
range of properties.
• Nonmetals—on right side of PT and include
elements with a wide range of properties:
carbon, nitrogen, sulfur, also the Halogens
such as chlorine and the noble gases such as
neon
• Metalloids—in between metals and
nonmetals in the PT—have characteristics of
both. Important in the making of
semiconductors for electronic devices