Hydrogen - Wikipedia
网页Hydrogen. hexagonal (hP4) Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H2, sometimes called dihydrogen, [11] but more commonly called hydrogen gas, molecular hydrogen or simply hydrogen.
Hydrogen | Properties, Uses, & Facts | Britannica
网页2024年8月20日 · hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, …
Hydrogen - Element information, properties and uses | Periodic …
网页However, hydrogen itself does not play a particularly active role. It remains bonded to carbon and oxygen atoms, while the chemistry of life takes place at the more active sites involving, for example, oxygen, nitrogen and phosphorus. Natural abundance. Hydrogen is easily the most abundant element in the universe.
氢 - 维基百科，自由的百科全书
网页氫 （英語： Hydrogen），是一種 化學元素， 化學符號 为 H， 原子序數 为1， 原子量 為 1.007 94 u 是 元素週期表 中最輕的元素。 單原子氫 （H）是宇宙中 最常見 的 化學物質，佔 重子 總質量的75% [8][註 1]。 等離子 態的氫是 主序星 的主要成份。 氫的最常見 同位素 是「氕」（此名稱甚少使用，符號為 ），含1個 質子，不含 中子；天然氫還含極少量的同位素「氘」（ 或 ），其含1個質子和1個中子。 氫原子最早在宇宙 復合 階段出現並遍佈全宇宙 …
HYDROGEN中文(简体)翻译：剑桥词典 - Cambridge Dictionary
网页hydrogen. noun [ U ] uk / ˈhaɪ.drə.dʒən / us / ˈhaɪ.drə.dʒən / (symbol H) Add to word list. a chemical element that is the lightest gas, has no colour, taste, or smell, and combines with oxygen to form water. 氢，氢气.
The Chemistry of Hydrogen - Division of Chemical Education, …
网页Hydrogen is the only element that forms compounds in which the valence electrons are in the n = 1 shell. As a result, hydrogen can have three oxidation states, corresponding to the H + ion, a neutral H atom, and the H - ion. Hydrogen's Placement in the Periodic Table.
Hydrogen Facts - H or Atomic Number 1 - ThoughtCo
网页2018年9月19日 · Hydrogen is the chemical element with the element symbol H and atomic number 1. It's essential for all life and abundant in the universe, so it's one element you should get to know better. Here are basic facts about the first element in the periodic table, hydrogen. Fast Facts: Hydrogen.
Hydrogen (H) - Periodic Table
网页Hydrogen is the 1st element in the periodic table and has a symbol of H and atomic number of 1. It has an atomic weight of 1.008 and a mass number of 1. Hydrogen has one proton and zero neutrons in its nucleus, and one electron in one shell. It is located in group one, period one and block s of the periodic table.
Facts About Hydrogen - Live Science
网页2015年1月23日 · Hydrogen is essential for life, and it is present in nearly all the molecules in living things, according to the Royal Society of Chemistry. The element also occurs in the stars and powers...
hydrogen summary - Britannica
网页hydrogen, Lightest chemical element, chemical symbol H, atomic number 1. A colourless, odourless, tasteless, flammable gas, it occurs as the diatomic molecule H 2. Its atom consists of one proton (the nucleus) and one electron; the isotope s deuterium and tritium have an additional one and two nuclear neutrons, respectively.