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Sifat-sifat logam, metaloid dan non logam. Semua unsur di alam ini dapat sebagai gas, zat cair, zat pada t, atau plasma. Tetapi secara sistem periodik, unsur juga dapat digolongkan sebagai logam, metaloid, ataupun non logam. Kelompok unsur terbesar adalah kelompok unsur logam.
Nonmetals are chemical elements that mostly lack distinctive metallic properties. They range from colorless gases like hydrogen to shiny crystals like iodine. Physically, they are usually lighter (less dense) than metals; brittle or crumbly if solid; and often poor conductors of heat and electricity.
Some nonmetals (C, black P, S, and Se) are brittle solids at room temperature (although each of these also have malleable, pliable or ductile allotropes). From left to right in the periodic table, the nonmetals can be divided into the reactive nonmetals and the noble gases.
sembunyikan. Awal. Sifat-sifat. Penggolongan tabel periodik unsur. Referensi. Batas antara logam dan nonlogam dapat diketahui melalui tabel periodik unsur kimia, terdiri dari unsur yang mempunyai sifat-sifat peralihan antara logam dan nonlogam. [1] .
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What is a nonmetal element?
What does nonmetal mean in physics?
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What is a nonmetal insulator?
May 1, 2024 · Nonmetal, in physics, a substance having a finite activation energy (band gap) for electron conduction. This means that nonmetals display low to moderate bulk electrical conductivities, which increase with increasing temperature, and are subject to dielectric breakdown at high voltages and temperatures.
- The Editors of Encyclopaedia Britannica
The dividing line between metals and nonmetals can be found, in varying configurations, on some representations of the periodic table of the elements (see mini-example, right). Elements to the lower left of the line generally display increasing metallic behaviour; elements to the upper right display increasing nonmetallic behaviour.
The nonmetals exhibit a rich variety of chemical behaviors. They include the most reactive and least reactive of elements, and they form many different ionic and covalent compounds. This section presents an overview of the properties and chemical behaviors of the nonmetals, as well as the chemistry of specific elements.
