The tag also supports the Global Attributes in HTML. Use CSS to style these elements (see example below)! The tag must be used in the following context: As a child of aĮlements will not affect the layout of the table by default. Also, when printing a large table that spans multiple pages, these elements can enable the table header and footer to be printed at the top and bottom of each page. elements to specify each part of a table (body, header, footer).īrowsers can use these elements to enable scrolling of the table body independently of the header and footer. Groups are the vertical columns on a periodic table, and group 2A is on the left. These variables allowed Mendeleev to place each element in a certain row (called a period) and column (called a group). The element is used in conjunction with the and Strontium is one of six elements belonging to the alkaline earth metals, or group 2A. The periodic table is arranged by atomic weight and valence electrons. The s-block elements are divided into two groups: Group 1 (alkali metals) and Group 2 (alkaline earth metals). When the periodic table is divided in this way, the transition metals and inner transition metals are the other main element categories. The tag is used to group the body content in an HTML table. The main group elements in older IUPAC group numbering systems are groups IA, IIA, and IIIA to VIIIA.
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