Scientists have found that our bodies need 28 different elements to function properly. These are almost one-quarter of the periodic table and are mainly found in the first four periods.
The periodic table of elements is one of the most significant tools in science, organizing all known chemical elements in a structured and meaningful way. It helps scientists understand element ...
This video explains the periodic table, containing all the known elements arranged in groups and periods. Elements in the same group of the periodic table show trends in physical properties ...
Both the figure and the table are something like a map or chart of matter on whichFig. 2. The periodic In this figure the periodic chain (fig. 1) is bent in a way that elements of similar ...