Is a metal or metalloid?
Table of Contents
Is a metal or metalloid?
The elements can be classified as metals, nonmetals, or metalloids. Metals are good conductors of heat and electricity, and are malleable (they can be hammered into sheets) and ductile (they can be drawn into wire)….Metals, Metalloids, and Nonmetals.
Is selenium or tellurium a metalloid?
Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens….
|Standard atomic weight Ar, std(Te)||127.60(3)|
|Tellurium in the periodic table|
Is selenium a cation or anion?
Selenium has three common forms: Selenate, a water-soluble anion. Selenite, a virtually water-insoluble anion.
Is Selenium a metalloid?
selenium (Se), a chemical element in the oxygen group (Group 16 [VIa] of the periodic table), closely allied in chemical and physical properties with the elements sulfur and tellurium. Selenium is a metalloid (an element intermediate in properties between the metals and the nonmetals).
Is selenium an anion?
Selenium has three common forms: Selenate, a water-soluble anion. Selenite, a virtually water-insoluble anion. Elemental Se, a water-insoluble crystal.
Will selenium form cations?
The nonmetals arsenic (As), tellurium (Te) and selenium (Se) are also named like the transition metals, and can form either cations or anions.
Which of the following is a nonmetal?
The 17 nonmetal elements are: hydrogen, helium, carbon, nitrogen, oxygen, fluorine, neon, phosphorus, sulfur, chlorine, argon, selenium, bromine, krypton, iodine, xenon, and radon.
Is selenium is a metal or a non metal?
Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust.
What are three properties of selenium?
In chemical activity and physical properties it resembles sulfur and tellurium . Selenium appearsin a number of allotropic forms: the most popular are a red amorphous powder, a red crystalline material, and a gray crystalline metallike form called metallic selenium.
Is silicon a metal, a non-metal, or a metalloid?
Silicon is classified as a metalloid since some of its properties are similar to those of metals and some of its properties are similar to those of nonmetals. For example, silicon is known to have a bluish-grey metallic lustre but is not an amazing conductor of electricity. This element is classified as a semiconductor.
What are the 6 metalloid?
The six metalloids are boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te).