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A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
English: This pictorial periodic table is colorful, boring, and packed with information. In addition to the element's name, symbol, and atomic number, each element box has a drawing of one of the element's main human uses or natural occurrences. The table is color-coded to show the chemical groupings.
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences.
This page was last edited on 23 September 2024, at 01:02 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
20.180: 0.000 9002: 24.56: 27.07: 1.03 – 0.005: primordial gas 11 Na Sodium: Coined by Humphry Davy who first isolated it, from English soda (specifically caustic soda), via Italian from Arabic ṣudāʕ 'headache' · Symbol Na, from Neo-Latin natrium, coined from German Natron 'natron' 1 3 s-block 22.990: 0.968: 370.87: 1156: 1.228: 0.93: 23 ...
a Group 1 is composed of hydrogen (H) and the alkali metals. Elements of the group have one s-electron in the outer electron shell. Hydrogen is not considered to be an alkali metal as it is not a metal, though it is more analogous to them than any other group. This makes the group somewhat exceptional.
Boca Raton, Florida, 2003; Section 1, Basic Constants, Units, and Conversion Factors; Electron Configuration of Neutral Atoms in the Ground State. (elements 1–104) Also subsection Periodic Table of the Elements, (elements 1–103) based on: G. J. Leigh, Editor, Nomenclature of Inorganic Chemistry, Blackwell Scientific Publications, Oxford, 1990.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18; 1: 氢 qīng hydrogen H: 氦 hài helium He: 2: 锂 lǐ lithium Li: 铍 pí beryllium Be: 硼 péng boron B: 碳 ...
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related to: chemistry 1 to 20 elements chart with pictures and names