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A metalloid is an element that possesses a preponderance of properties in between, ... [35] have also occasionally been considered as metalloids. ...
Recognition status, as metalloids, of some elements in the p-block of the periodic table. Percentages are median appearance frequencies in the lists of metalloids. [n 2] The staircase-shaped line is a typical example of the arbitrary metal–nonmetal dividing line found on some periodic tables.
The chemical elements can be broadly divided into metals, metalloids, and nonmetals according to their shared physical and chemical properties.All elemental metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metallic elements; and have at least one basic oxide.
Similarly, some elements otherwise counted as metalloids or nonmetals are sometimes instead counted as post-transition metals namely germanium, arsenic, selenium, antimony, tellurium, and polonium (of which germanium, arsenic, antimony, and tellurium are usually considered to be metalloids).
Periodic table of the chemical elements showing the most or more commonly ... Metalloids; dividing metals and nonmetals ... Hydrogen is not considered to be an alkali ...
Nonmetals show more variability in their properties than do metals. [1] Metalloids are included here since they behave predominately as chemically weak nonmetals.. Physically, they nearly all exist as diatomic or monatomic gases, or polyatomic solids having more substantial (open-packed) forms and relatively small atomic radii, unlike metals, which are nearly all solid and close-packed, and ...
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After the relevant nonmetals are classified as either noble gases or halogens, the remainder are considered on a group-by-group basis. This results in six or seven sets of nonmetals, depending on the treatment of boron, which in some cases is regarded as a metalloid.