the most common elements are:
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Legend, scale, and compass rose are common elements found on most maps. The legend explains the symbols used on the map, the scale shows the relationship between distances on the map and in reality, and the compass rose indicates the cardinal directions.
The most common charge for phosphorus is -3, as it typically forms an anion by gaining three electrons to achieve a stable electron configuration.
The most common negative oxidation state in Group 13 elements is -3. This is particularly seen in compounds where these elements form three bonds with more electronegative species.
The most common oxidation states in the periodic table are +1, +2, +3, -1, -2, -3. These oxidation states are frequently observed in elements based on their position in the periodic table and their electron configuration.
Oxygen (O) at 47%, silicon (Si) at 28% are the two most common elements in minerals. Other elements in minerals are aluminum (Al) at 8%, Iron (Fe) at 5%, Calcium (Ca) at 3.5%, Sodium (Na) at 3%, Potassium (K) at 2.5% and Magnesium (Mg) at just 2%. All the other elements together make up only 1% of the earth's crust by weight.
Group 3 of the periodic table contains many of the radioactive elements.