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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
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Group	1	2	3	4	5	6	7	8	9	10	11	12Group 6 Period 4 30 Zn 5 48 Cd 6 80 Hg 7 112 Uub The Group 12 elements are: Zinc (30) Cadmium (48) Mercury (80) Ununbium (112) Key to color coding in table slice on right: Transition metals Color coding for these atomic numbers: At room temperature, all a	13The Boron group is periodic table group 13 ( IUPAC style) in the periodic table. It consists of: boron aluminium gallium indium thallium ununtrium (unconfirmed) Chemical element groups.	14The carbon group is group 14 ( IUPAC style) in the periodic table. The group consists of: carbon silicon germanium tin lead ununquadium Chemical element groups.	15	16The chalcogens are the name for the periodic table group 16 (old-style: VIB or VIA) in the periodic table. It consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), the radioactive polonium (Po), and the synthetic ununhexium (Uuh)	17The halogens are a chemical series. They are the elements in Group 17 (old-style: VII or VIIA) of the periodic table: fluorine, chlorine, bromine, iodine, and astatine. The word comes from Greek roots meaning "salt" and "creator". These elements are diato	18The noble gases are a chemical series. They are the elements in group 18 (old-style Group 0) of the periodic table; specifically helium, neon, argon, krypton, xenon and radon. The term noble gas comes from the fact that, just like the common view of human
# Name	11 NaSodium is the chemical element in the periodic table that has the symbol Na Natrium in Latin) and atom number 11. Sodium is a soft, waxy, silvery reactive metal belonging to the alkali metals that is abundant in natural compounds (especially halite).	12 Mg											13 Al	14 Si	15 P	16 S	17 Cl	18 Ar

Alkali metals	Alkaline earths	Lanthanide	Actinides	Transition metals
Poor metals	Metalloids	Nonmetals	Halogens	Noble gases

Period 1 element - Period 2 element -

Period 3 element -

Period 4 element - Period 5 element - Period 6 element - Period 7 element - Period 8 element -

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Topics: Period 3 Element Metals Elements Chemical Group Actinides Noble...

Periodic tableThe periodic table of the chemical elements is a tabular display of the known chemical elements. The elements are arranged by electron structure so that many chemical properties vary regularly across the table. Each element is listed by its atomic number	Periodic table (alternate)The Alternate Table is a periodic table perpendicularly rotated counterclockwise, hence like in many writing systems, the lower groups are to the left and the number increases to the right. Due to the rotation and the incorporation of the lanthanides and	Periodic table (big)Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 I II III IV V VI VII VIII Period 1 hydrogen1H helium2He 2 lithium3Li beryllium4Be boron5B carbon6C nitrogen7N oxygen8O fluorine9F neon10Ne 3 sodium11Na magnesium12Mg aluminium13Al silicon14Si phosphorus15
Periodic table (huge)The Huge Table is a detailed periodic table that does not fit into most computer screens. However, with a small font size, or in landscape mode, this table can be printed on one normal-size sheet of paper. Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1	PeriodizationPeriodization is the attempt to categorize or divide historical time into discrete named blocks. Periodization is a complex problem in history. History is in fact continuous, and so all systems of periodization are to some extent arbitrary. Almost every d	PeriodA period is an arbitrary interval of time. The word is applied to many different concepts: generally, in science, the time taken for one complete cycle of an alternating quantity. The period of oscillation of a wave is the time taken for the wave to compl
Periodic table (wide)	Period (rhetoric)	Periodic table (extended)
Periodic function	Periodic table group	Periodic table period
Periodic table block	Periodic table (standard)	Periodontal disease