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Home > Periodic table

The standard table provides the necessary basics. There are also other methods for displaying the chemical elements for more details or different perspectives.

1 Groups

A group is a vertical column in the periodic table of the elements. There are 18 groups in the standard periodic table. Elements in a group have similar configurations of their valence shell electrons, which gives them similar properties.

1.1 Group numbers

There are three systems of group numbers; one using Arabic numerals and the other two using Roman numerals. The Roman numeral names are the original traditional names of the groups; the Arabic numeral names are a newer naming scheme recommended by the International Union of Pure and Applied Chemistry (IUPAC). The IUPAC scheme was developed to replace both older Roman numeral systems as they confusingly used the same names to mean different things.

2 Standard periodic table

State at standard temperature and pressure

• those in red are gases
• those in green are liquids
• those in black are solid

Natural occurrence

• those with solid borders have isotopes that are older than the Earth ( Primordial elements)
• those with dashed borders naturally arise from decay of other chemical elements
• those with dotted borders do not occur naturally ( Synthetic elements)
• those without borders have not been discovered yet

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Topics: Periodic Table Elements Mass Atomic Chemical Properties Group...

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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 Periodic table (wide)Periodic Table of the Elements 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 1 H 2 He 2 3 Li 4 Be 5 B 6 C 7 N 8 O 9 F 10 Ne 3 11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar 4 19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 2 Periodic table (extended)This extended periodic table was suggested by Glenn T. Seaborg in 1969. It is a logical extension of the principles behind the standard periodic table to include as-yet-undiscoved chemical elements. All of the undiscovered elements are named by the IUPAC Periodic function Periodic table group Periodic table period Periodic table block Periodic table (standard) Periodic table (electron configurations) Periodic table (metals and non-metals) Periodic table (block) Periodic table (detailed)