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Metalloids can be defined as chemical elements whose physical and chemical properties fall in between the metal and non-metal categories. Boron, germanium, silicon, antimony, arsenic, tellurium and pollanium are the seven most widely recognized metalloids. It can be noted that all seven of these elements can be found on the regular periodic ...
Ans: Metals, non-metals, and metalloids can be classified as elements. Metals are great heat and electricity conductors and are malleable (can be hammered into sheets) and ductile (can be drawn into wire). Typical nonmetals have a dull appearance, relatively low melting points, boiling points, and densities, and are poor conductors of heat and ...
The table below classifies 103 elements as metal, metalloid, or nonmetal and as solid, liquid, or gas at ...
Germanium acts as a Metalloid. Its properties are between metals and nonmetals. it is a lustrous, hard-brittle, grayish-white solid, used as a semiconductor. Germanium has diamond-like structure and its properties are very similar to the physical and chemical properties of silicon.
Metalloid lacks malleability and ductility. As non-metals are, it's a brittle substance. Metalloids have an electrical conductivity that ranges from moderate to high. Electronic band structures of metalloids are known to be similar to semimetals or semiconductors. Aluminum has an atomic number = 13 and is a good heat and electrical conductor.
Metal, metalloid and nonmetal: Metals are known as the compounds which have a tendency to donate electron, whereas the elements having gaining tendency of electron is known as nonmetals. However, metalloids are known to be those elements which have both the properties of a metal and nonmetal. Silicon is a metalloid:
Q. (a) What are (i) metals (ii) non-metals, and (iii) metalloids ? Give two examples each of metals, non-metals and metalloids. (b) Classify the following into metals, non-metals and metalloids : Silicon, Mercury, Diamond, Sulphur, Iodine, Germanium, Sodium, Carbon, Magnesium, Copper, Boron, Helium. Q. Give two examples for each of the following.
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.
Metallic bonds impart several important properties to metals that make them commercially desirable. Some of these properties are briefly described in this subsection. 1. Electrical Conductivity. Electrical conductivity is a measure of the ability of a substance to allow a charge to move through it.
The no of electrons present in the valence shell of an atom determines whether it’s a metal, non-metal or metalloid. If an element has 1,2 or 3 electrons in its valence shell it is considered as a metal, if it has 5,6 or 7 electrons it is considered as a non-metal and if it has 4 electrons in its valence shell then it is considered as a ...