printable periodic table of elements 2017

The symbol Au for Gold is taken from Latin aurum (yellow) and from aurora (dawn). The symbol Cu for Copper is taken from Latin Cuprum a contraction of Cyprian metal from Cyprus which was famous for copper.

The symbol Sb for Antimony is taken from Latin stibium, Greek stíbi which means eye paint because antimony was used in eye cosmetics. Here’s a list of chemical elements with symbols which do NOT match their names with explanations: Most of the abbreviations for elements are derived from Latin. Why do some elements have names which do not match its symbol? 18 columns: Columns are used to group together chemical elements which share similar properties.7 rows: Each row represents a period and includes chemical elements ordered by the number of protons in their nucleus.Elements which share similar properties are called congeners and (by skipping columns) are grouped together as follows: The last element in each row has a full shell of electrons so these elements are the least reactive and most stable. The first element in each row has just one electron in its outer shell which means it is unstable and the most reactive. All the elements in the second row (second period) have two orbitals for their electrons, as so on for the other periods. For example all the elements in the top row (period) has one orbital of its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons.Ĭhemical elements are grouped into periods (rows), ordered by their atomic number, which have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons.

What does “Periodic” mean in the periodic table?Įlements in a period have the same number of atomic orbitals. Frequently Asked Questions About the Periodic Table.

Printable periodic table of elements 2017