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THE PERIODIC TABLE
4.3 - Metals, Nonmetals and Semimetals
4.3.2 - The Properties of the Nonmetals
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- nonmetals can be found in nature in the uncombined
elemental form
- nonmetals can combine with other nonmetals
to form compounds such as:
- carbon dioxide, CO2
- carbon monoxide, CO
- methane, CH4
- ammonia, NH3
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- fluorine is the most
reactive of all the nonmetals
- nonmetals are poor conductors of heat and
electricity
- nonmetals are not lustrous and are
dull
- nonmetals are not ductile or malleable
and brittle
- nonmetals have low densities
- seven of the nonmetallic elements exist as
diatomic molecules (section
4.7)
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Section 3.7
 Division
of Elements ..p69
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