搜尋結果
2 天前 · 元素週期表是依原子序數、核外電子組態情況和化學性質的相似性來排列化學元素的表格。 一如其名，元素週期表的排列展現元素性質的週期性趨勢。其中，週期表的橫行被稱作週期，縱列則被稱作族。一般而言，在同一週期內，金屬元素位於表的左端，非金屬位於右端；同族的元素則大多具有 ...
Interactive periodic table with atomic, chemical and physical properties of all known elements. Element lists, scales and much more free, free and open source. In the periodic table of elements, all known chemical elements are arranged according to increasing nuclear charge (atomic number). The table is divided into rows (periods) and columns ...
Immediately find any imaginable information about an element, calculate molar masses of any compounds you like, facilitate your overview with infographics and much more. Our PTE App is the ultimate tool for every friend of chemistry - whether pupil or teacher, student or professor, amateur or expert, hobbyist or technician.
294. La tabla periódica, también llamada tabla periódica de elementos, es una clasificación de elementos y tipos atómicos según su número atómico creciente, así como propiedades químicas y físicas, así como la configuración electrónica en las capas electrónicas externas. Las columnas verticales de la tabla periódica se llaman ...
Vocabulary. Group (family): A vertical column in the periodic table. Alkali metals: Group 1A of the periodic table. Alkaline earth metals: Group 2A of the periodic table. Halogens: Group 7A of the periodic table. Noble gases: Group 8A of the periodic table. Transition elements: Groups 3 to 12 of the periodic table.
Periodic table - Elements, Groups, Blocks: The periodic table of the elements contains all of the chemical elements that have been discovered or made; they are arranged, in the order of their atomic numbers, in seven horizontal periods, with the lanthanoids (lanthanum, 57, to lutetium, 71) and the actinoids (actinium, 89, to lawrencium, 103) indicated separately below. The periods are of ...
We observe a common trend in properties as we move across a period from left to right or down the group. This trend in properties is known as periodic properties. The important periodic properties are atomic size, metallic character, non-metallic character, ionization potential, electron affinity, and electronegativity. Periodic Table Trends.
