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Hydrogen is a period 1 chemical element, which is the first row on the periodic table. Hydrogen is a group 1 chemical element, which is the lithium family. Hydrogen has three known stable isotopes and they are protium (1 H or hydrogen-1), deuterium (2 H or hydrogen-2) and tritium (3 H or hydrogen-3).
1 gru 2023 · It has the symbol H and atomic number 1. It has a standard atomic weight of 1.008, meaning it is the lightest element in the periodic table. Hydrogen is the most common chemical element in the Universe, making up 75% of all normal (baryonic) matter (by mass). Most stars are mostly hydrogen.
Hydrogen is the lightest, simplest and most commonly found chemical element in the Universe, making up around 75% of its elemental mass. Hydrogen is found in large amounts in giant gas planets and stars, it plays a key role in powering stars through fusion reactions.
Hydrogen makes up less than 1 percent of Earth’s crust, but it is part of all the water on Earth. It is also one of the gases that makes up Earth’s atmosphere. It is in the tissues of all plants and animals and in petroleum as well. Hydrogen is also found in most stars, including the sun.
Hydrogen makes up about 10 percent of the weight of living organisms most of which is found in water, proteins and fats. It is also the most abundant element in the entire universe. It is also believed to be one of three elements produced in the Big Bang along with helium and lithium.
Kids learn about the element hydrogen and its chemistry including atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics of hydrogen.
Key points. Hydrogen is an element; it exists naturally as a molecule. Each hydrogen molecule is made up of two hydrogen atoms. In hydrogen cars hydrogen reacts with oxygen in a fuel...
