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Periodic table


The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic ... table used in chemistry. For other uses, see Periodic table ( disambiguation). Modern periodic table,...

The Modern Periodic Table - Genesis


Our modern day periodic table is expanded beyond Mendeleev's initial 63 ... The modern periodic table of the elements contains 18 groups, or vertical columns.

The Periodic Table of Elements
Dmitri Mendeleev generally is credited with the creation of the first periodic table, which charts the chemical elements by atomic number and valence shell electron configuration.
Browse Elements:

The chemical elements of the periodic table sorted by atomic number


The elements of the periodic table sorted by atomic number. click on any element's name for further chemical properties, environmental data or health effects.

Period (periodic table)


A period is one of the horizontal rows in the periodic table, all of whose elements have the same number of electron shells. Going across a period, each element has one more proton and is less ... a...

How many elements are in the periodic table? | Reference.com


There are 118 known elements on the periodic table. The most recently discovered element, Ununoctium, was first reported by Russian scientists from Dubna in.

Element Families and Descriptions of Each - Chemistry - About.com


Elements may be categorized according to element families. This is an ... Halogens - Group 17 (VIIA) - 7 valence electrons; Noble Gases - Group 18 (VIIIA) - 8 valence electrons ... Columns of the periodic table typically mark groups or families.

Group 8 element


Group 8 is a group of chemical element in the periodic table. It consists of iron (Fe ), ruthenium (Ru), osmium (Os) and hassium (Hs). They are all transition metals. Like other groups, the members o...

Group - Periodic Table of Elements: Los Alamos National Laboratory


See About the Periodic Table for information on how Group can be used to ... Group 6: the chromium family; Group 7: the manganese family; Group 8: the iron  ...

Popular Q&A
Q: Who invented the modern periodic table? - Quora
A: Jun 29, 2015 ... The Modern Periodic Table was classified by Moseley. He altered the periodic table made by Mendelev and arranged the elements in ... Read More »
Source: www.quora.com
Q: Who discovered the modern periodic table? - Quora
A: Aug 31, 2015 ... What book? The basic form of the Periodic table was set down by Mendeleev, who also successfully predicted the properties of undiscovered ... Read More »
Source: www.quora.com
Q: Which metals are very active in modern periodic table? - Quora
A: The alkali and alkali earth metals (group 1 and 2) are highly reactive elements. Most of the alkali metals will explode when put into water. However, I don'... Read More »
Source: www.quora.com
Q: How come the atomic numbers of elements in the modern periodic .....
A: They don't "come in an order" as you put it. They are arranged in that order. There were several empty boxes in the table when it was first made ... Read More »
Source: www.quora.com
Q: What are some interesting ways to remember the modern periodic .....
A: You can memorize the periodic table in one night, simply by emulating best- practice memorization techniques and doing what memory experts do. Common  ... Read More »
Source: www.quora.com