is thulium a metal or nonmetal?
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Thulium is a lanthanide element, it has a bright silvery-gray luster and can be cut by a knife. It is the least abundant of the rare earths and its metal is easy to work. It slowly tarnishes in air, but is more resistant to oxidation than most rare-earth elements.
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Answer and Explanation: The most reactive nonmetal is fluorine. Fluorine is a halogen, which is Group 17 on the periodic table, and the halogens are the most reactive...
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Tantalum is a chemical element with the symbol Ta and atomic number 73. Previously known as tantalium, it is named after Tantalus, a villain from Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.
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Most other metals, for example aluminium, copper and gold, are NOT magnetic. Two metals that aren't magnetic are gold and silver. They are often used for making jewellery, including crowns for instance.
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Boron, silicon, germanium, arsenic, antimony, and tellurium are commonly recognised as metalloids. Depending on the author, one or more from selenium, polonium, or astatine are sometimes added to the list. Boron sometimes is excluded, by itself, or with silicon. Sometimes tellurium is not regarded as a metalloid.
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Metals usually have a metallic or shiny appearance. Nonmetals are usually have a dull luster (or you can say they lack luster). Most are shiny (metallic luster), malleable, ductile, high density and high melting point, and good conductors of heat and electricity.
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Sulfur is characterized as a non-metal because it is consistent with the 3 physical properties listed for nonmetals. It is a poor conductor of heat and electricity because the electrons are not free to move. ... It has a very high electronegativity because it is able to gain electrons easily.
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Elements are typically classified as either a metal or nonmetal, but the dividing line between the two is fuzzy. Metal elements are usually good conductors of electricity and heat. The subgroups within the metals are based on the similar characteristics and chemical properties of these collections.
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Metals are dense, shiny, good conductors of heat and electricity, and easily lose electrons in chemical reactions. Nonmetals are not dense, dull, do not conduct heat and electricity, and tend to gain electrons. Metalloids are elements that have properties of both metals and nonmetals.
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['Metals are generally shiny, malleable, and hard. Metals are also good conductors of electricity. ... ', 'Non-metals do not conduct heat or electricity very well. Non-metals are typically brittle and are not easily molded into shapes. ... ', 'Metalloids share characteristics of both metals and non-metals and are also called semimetals.']
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['Alkali metals.', 'Alkaline earth metals.', 'Transition metals.', 'Post-transition metals.', 'Metalloid.', 'Lanthanides.', 'Actinides.', 'Nonmetals.']
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An inner transition metal (ITM) is one of a group of chemical elements on the periodic table. They are normally shown in two rows below all the other elements. They include elements 57-71 (lanthanides) and 89-103 (actinides). The lanthanides are very similar, and the actinides are all radioactive.
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Elements like O (oxygen) and H (hydrogen) are members of nonmetals. They can be a solid or a gas at room temperature. They have an appearance that is dull or without luster.
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Metals, Nonmetals, & Metalloids. ... The periodic table on the left separates elements into three groups: the metals (green in the table), nonmetals (orange), and metalloids (blue). Most elements are metals. They are usually shiny, very dense, and only melt at high temperatures.
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The nonmetals arsenic (As), tellurium (Te) and selenium (Se) are also named like the transition metals, and can form either cations or anions.
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just by seeing its physical properties. metals are ductile ,malleable, luster,whereas nonmetals are not. ... The main difference between metal and non-metal is that metal give electron to another atom or compound while non metal accept electron from other substances. this is because of their electronic configuration.
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Stainless steel is a common form of ferrous metal. Non-ferrous metals, on the other hand, do not contain any iron. These metals may be raw metals, purified metals, or alloys. Common non-ferrous metals include aluminum, copper, tin, and precious metals like gold and silver.