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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 H 2 , sometimes called dihydrogen , [ 11 ] but more commonly called hydrogen gas , molecular hydrogen or simply hydrogen.
The periodic table, ... what the periodic table classifies and organizes. Hydrogen is the element ... by a one- or two-letter chemical symbol; those for hydrogen, ...
The periodic table, elements being denoted by their symbols. ... The symbols for isotopes of hydrogen, deuterium (D) and tritium (T), are still in use today, ...
What is the chemical symbol for water in the periodic table? Answer: H2O. What is the most abundant element in the universe? Answer: Hydrogen. Which planet is known as Earth’s twin? Answer: Venus.
Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.
(symbol) Z Description (symbol etymology, former names) Hydrogen (H) 1 ὕδωρ (root: ὑδρ-) + γενής (hydor genes) Greek via Latin and French "water + begetter" descriptive From French hydrogène [2] and Latin hydro-and -genes, derived from the Greek ὕδωρ γείνομαι (hydor geinomai), meaning "Ι beget water". Helium (He) 2
Hydrogen readily loses and gains an electron, and so behaves chemically as both a group 1 and a group 17 element. Hydrogen (H) is the most abundant of the chemical elements, constituting roughly 75% of the universe's elemental mass. [1] Ionized hydrogen is just a proton. Stars in the main sequence are mainly composed of hydrogen in its plasma ...
All 118 discovered elements are confirmed and have a formal name and symbol, as decided by IUPAC. The last four names and symbols were added on November 28, 2016. [1] [2] Currently there are no unconfirmed discoveries and all seven periods (rows) of the periodic table are completed.
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