Group 2 or IIA. The first group has seven elements representing the seven periods of the Periodic Table. Alkaline Earth Metals or Group 2 Family of Elements. Periodic Table Atomic number Chemical Symbol Name Atomic Mass. It was discovered in 1940. Get started! Identify families of elements and organize your notes with these effective and efficient worksheets. Group 1 of the periodic table are the alkali metals. Periodic Table of Elements - The Periodic Table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers (numbers of protons in the nucleus), electron configurations, and recurring chemical properties. When the elements are thus arranged, there is a recurring pattern called the âperiodic lawâ in their properties, in which elements in the same column (group) have similar properties. Knowing how to identify families, the elements included and their properties makes it possible to predict the behavior â¦ Alkaline Earth Metals. group 3-12, largest group on periodic table, good conductors of heat and electricity, compounds with these elements are usually brightly colored, most â¦ Today 's Points. The newer method uses the numbers 1 through 18. More â¦ Definition, mass & chemical names. Periodic Table. The Periodic table can also be divided into several families of elements each having similar properties. Electronic Configuration: the distribution of electrons in different shells and subshells Classification of Elements based on Electronic Configuration: 1. s-block elements:. The noble â¦ Astatine is a highly radioactive element and the heaviest member of halogen family. The valence configuration for hydrogen is thus written as 1s 1. alkaline earth. Very reactive metals. In addition to these families, the transition metals also a single family.Â These contain the elements found in groups 3 through 16 of the periodic table.Â Many of these are hard metals which are dense with high melting points.Â As you move across the groups from left to right in this family, more of the elements are metalloids, showing fewer characteristics of metallic elements. Noble gases: Group 8A of the periodic table. Members of the families (vertical columns) in the periodic table have similar properties. The horizontal rows of elements in periodic table are called periods. transition metals. - Have 7 valence electrons requiring only â¦ The columns of the periodic table are often used to define families. One of us! Total Points. Group 2 is known as the alkaline earth metals.Â These have two valence electrons, meaning that they are less reactive than the alkali metals, but still react very easily.Â These are harder metals and have higher melting points than the alkali metals. Shiny, lustrous, oxidize easily. Use the buttons above to change your view of the periodic table and view Murray Robertsonâs stunning Visual Elements artwork. Families contain elements with similar characteristics, usually determined by the number of electrons in the outer â¦ Li to Fr and alkaline earth metals (group IIA or 2) i.e. Groups are numbered 1-18. The characteristics of modern periodic table are: The arrangement of elements in modern periodic table is based on their electronic configurations. Most element families are a single column of the periodic table, although the transition elements consist of several columns, plus the elements located below the main body of the table. Chemical Characteristics. Periodic Table is arranged by atomic number. The noble gas family consists of helium (which is used in balloons), neon (neon lights), krypton, xenon (which is used in headlights), argon (which is used in light bulbs), and radon (whose isotopes can be used to cure cancer). Interactive periodic table with up-to-date element property data collected from authoritative sources. 0. Metallic solids, harder than the alkali metals. The Periodic table can be divided into nine families of elements each having similar properties. And so as we go through these terms, I'm going to be checking them off. Transition elements: Groups 3 to 12 of the periodic table. There are 7 periods in modern periodic table. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. For our purposes we will define the following ten families: Alkali metals. And so, if I go over here, I can see that all of these elements are in the same vertical column. On the left, a periodic table to highlight elements belonging to each family and, on the right, space reserved for notes.1st page: Metals, Non-Metals, and Metalloids2nd page: Alkali Metals, Alkaline The Periodic Table of elements is a listing of known elements organized by their atomic number.The Periodic Table was changed over time and the order has changed to have their atomic numbers in order but also by listing them by their properties.
[ Los Alamos National Laboratory's Chemistry Division Dec 11, 2003 periodic table of elements -retrieve date 2-5-09 ]