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- Anne Marie Helmenstine, Ph.D.
- H - Hydrogen.
- He - Helium.
- Li - Lithium.
- Be - Beryllium.
- 20 Examples of Elements
- About The Elements
- References
Here are 20 examples of elements. These are the first 20 elements, listed by atomic number, name, symbol, and use. 1. Hydrogen (H): Most of the universe consists of hydrogen. It is a fuel and occurs in many compounds, such as water and hydrogen peroxide. 2. Helium (He): Helium is a monatomic gas. It is used in cryogenics, balloons, and as an inert ...
Atomic Number
The periodic tablelists elements in order of increasing atomic number. So, hydrogen is the first element, with atomic number 1. Oganesson is the last element, with atomic number 118. The groups (columns) and periods (rows) of the table organize elements according to recurring properties or periodic table trends. Atoms with the same atomic number as each other are the same element, even if they have differing numbers of electrons (ions) or neutrons (isotopes).
Element Names
Elements are named for a person, place, property, mineral, or mythological figure. In English, element names are not proper nouns. That is, the first letter of the name is not capitalized unless it begins a sentence or list. By convention, halogen element names end with -ine and noble gas names end with -on. Many element names end with -ium, but it is not a requirement for any group.
Element Symbols
Element symbols are one- or two-letter abbreviations for element names. The first letter is capitalized, while the second letter is not. Notice that most of the time, the element symbol corresponds to its name. There are exceptions, such as K for potassium, Au for gold, and Pb for lead. In these cases, people knew the elements by other names before scientists agreed on an international naming system. These symbols reference the old names. For example, K is for kalium, Au is for aurum, and Pb...
Ball, P. (2004). The Elements: A Very Short Introduction. Oxford University Press. ISBN 978-0-19-284099-8.Emsley, J. (2003). Nature’s Building Blocks: An A–Z Guide to the Elements. Oxford University Press. ISBN 978-0-19-850340-8.Gray, T. (2009). The Elements: A Visual Exploration of Every Known Atom in the Universe. Black Dog & Leventhal Publishers Inc. ISBN 978-1-57912-814-2.IUPAC (1997). “Chemical element”.Compendium of Chemical Terminology (the “Gold Book”) (2nd ed.). Blackwell Scientific. doi:10.1351/goldbook.C01022People also ask
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List of chemical elements. As of April 2024, 118 chemical elements have been identified and named officially by IUPAC. 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]
Oct 17, 2020 · An element is a pure substance composed of atoms with the same number of protons. The 118 known elements are hydrogen, helium, iron, neon, carbon, oxygen, tritium, diamond, graphite and more. Learn how to name, symbolize and classify elements, and the difference between elements, molecules and compounds.
A chemical element is a chemical substance that cannot be broken down into other substances by chemical reactions. The basic particle that constitutes a chemical element is the atom. Chemical elements are identified by the number of protons in the nuclei of their atoms, [1] known as the element's atomic number. [2]
The gaseous elements hydrogen and oxygen, for example, with quite different properties, can combine to form the compound water, which has altogether different properties from either oxygen or hydrogen. Water clearly is not an element because it consists of, and actually can be decomposed chemically into, the two substances hydrogen and oxygen ...
Some elements follow the English term for the element, such as C for carbon and Ca for calcium. Other elements’ chemical symbols come from their Latin names; for example, the symbol for sodium is Na, which is a short form of natrium, the Latin word for sodium.
