This page covers the second part of this topic
Physical properties of HALOGENS:
-Halogens are in group 7 of the periodic table.
-They are non-metals.
-As the group goes down, the melting point increases (This is the opposite of alkali metals).
-Also, the density increases as the group goes down
-In Halogens, the lower the density, the lower the melting point
-Reactivity of the halogens decreases as the group goes down (Link to video)
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Element name
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Melting point (degrees C)
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State (at room temp.)
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Color (at room temp.)
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Density (g/cm^3)
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Symbol
|
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Fluorine
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-219.52
|
gas
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colorless
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0.001696
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F
|
|
Chlorine
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-100.84
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gas
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pale green
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0.003214
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Cl
|
|
Bromine
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-7.1
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liquid
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dark red-brown
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3.11
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Br
|
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Iodine
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113.5
|
solid
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dark violet
|
4.93
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L
|
| Astatine |
302 |
solid |
black |
~7 |
At |
The Periodic table (part 2):
-The elements are arranged in proton number ( for example, Li (lithium) is number 3, so it has 3 protons)~ look at the key at the bottom
-Groups go down (group I,II,IV,...)
-Periods go across (period 1,2,3...)
Oxides
-When some metals such as magnesium are heated in air they form oxides
-Not all metals will react with air.
-Non-metals can also form acidic oxides
Periodic patterns
-A periodic pattern is a pattern that appears a number of times
more to go...
Comments (3)
Simon Lorimer said
at 12:16 pm on May 9, 2008
This is a good start - can someone add some more information about other groups?
Eric and Antonia said
at 10:35 am on May 13, 2008
You have a startling lack of waving queens. Otherwise, well done.
Sophie said
at 10:36 am on May 13, 2008
Like the table. Maybe give examples of oxides.
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