The Periodic Table offers basic information about each one of the known chemical elements. Each element has its own box in the table, and these boxes include the element's atomic number, atomic weight and chemical symbol. An element's position on the table indicates which elements share its basic properties.Know More
The Periodic Table is organized according to atomic number, which is equal to the number of protons found in the nuclei of an element's atoms. The rows on the table are known as periods, and the columns are known as groups. Elements in certain groups tend to share characteristics. For example, elements in Group 1, including lithium, sodium and potassium, are known as the alkali metals. They tend to lose electrons, forming positive ions. Elements in Group 18, including helium and neon, are known as the noble gases and tend to be inert or non-reactive.
An element's position in the table tells a lot about its properties. Elements on the left side of the table are mostly metals, and they all share certain characteristics, such as high melting points and the ability to conduct electricity. Elements on the right of the table are non-metals, which tend to form negative ions and lack a lustrous sheen. Those in the middle are known as semi-metals, displaying characteristics of both metals and non-metals.Learn more about Atoms & Molecules
The symbol "Cd" stands for the element cadmium on the periodic table. The atomic number of cadmium is 48, and its atomic weight is 112.404 atomic mass units. Cadmium is a heavy metal that belongs to the fifth period on the periodic table.Full Answer >
The periodic table classifies chemical elements by their similarities and properties. Each square in the periodic table shows an element's atomic number, its symbol, its name and its atomic weight, which is the number of protons and neutrons the element has.Full Answer >
On the periodic table, the seven horizontal rows are called periods. On the left-hand side of the periodic table, the row numbers are given as one through seven. Moving across a period from left to right, the atomic number of the elements increases.Full Answer >
The columns on the periodic table of elements are called groups. The elements in a group share the same configuration of valence electrons, which gives the elements similar chemical properties. The number of valence electrons in a group is sometimes represented with a Roman numeral above the column.Full Answer >