APA citation style: Historic American Buildings Survey, C. & Benison, G. (1933) Oakland Plantation, Mount Pleasant, Charleston County, SC. Documentation Compiled After. [Pdf] Retrieved from the Library of Congress, https://www.loc.gov/item/sc0292/.
There are 18 groups (columns) in the periodic table. Group 1 (also known as the alkali metals) is the column on the far left of the table. Elements in the same group have similar, but not identical characteristics. This is because they all have the same number of electrons in their outermost shell.
Special Group and Period Names. Many groups and periods on the periodic table have been give special names. Although it may be common to refer to the first column of the periodic table (Li, Na, K, etc.) by âGroup 1â, the group has a special name. On the periodic table below, the groups are numbered to help identify the element groups and their names: Group 1 (Group 1A) - Alkali Metals.