Teisendustelemente

Teisendustelemente, also known as transition metals, are a group of elements in the periodic table that exhibit unique chemical and physical properties. They are located in the middle of the periodic table, between the alkali metals and the metalloids. The transition metals include elements from groups 3 to 12, which are scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), and zinc (Zn), as well as the lanthanides and actinides. These elements are characterized by their ability to form multiple oxidation states, which allows them to participate in a wide range of chemical reactions. Transition metals are known for their high melting and boiling points, as well as their ability to conduct heat and electricity. They are also known for their ability to form complex compounds, which makes them important in various industrial applications. Some common uses of transition metals include their use in alloys, such as stainless steel, and their use in catalysts, such as those used in the production of fertilizers and plastics. Transition metals also play a crucial role in biological systems, as they are involved in various enzymatic reactions. Despite their importance, transition metals can also be toxic, and their exposure should be carefully managed to avoid adverse health effects.