Period 3 element

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A period 3 element is one of the chemical elements in the third row (or period) of the periodic table of the elements.

These are:

Chemical elements in the third period
Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
#
Name		 11
Na		 12
Mg		 13
Al		 14
Si		 15
P		 16
S		 17
Cl		 18
Ar
e--conf.


Chemical series of the periodic table
Alkali metals Alkaline earth metals Lanthanides Actinides Transition metals
Poor metals Metalloids Nonmetals Halogens Noble gases
v • d • e
Periodic tables

Standard · Vertical · Full names · Names and atomic masses · Text for last · Electron configurations
Metals and nonmetals · Blocks · Valences · Inline f-block · 218 elements · Alternatives

Lists of elements:
Name · Atomic symbol · Atomic number · Boiling point · Melting point · Density · Atomic mass

Groups:
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 · 13 · 14 · 15 · 16 · 17 · 18

Periods:
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8

Series:
Alkalis · Alkaline earths · Lanthanides · Actinides · Transition metals
Poor metals · Metalloids · Nonmetals · Halogens · Noble gases

Blocks:
s-block · p-block · d-block · f-block · g-block


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