9. Hydrogen
Hydrogen, the first and lightest element, is essential for life and has unique properties and applications across various industries. It occurs abundantly in nature, primarily within water and organic compounds, and exhibits characteristics of both alkali metals and halogens in the periodic table. Its isotopes play significant roles in energy and research, while hydrogen's combustion results in water, making it a potential clean fuel for the future.
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What we have learnt
- Hydrogen is the most abundant element in the universe and is critical for life.
- It displays properties similar to both alkali metals and halogens.
- Hydrogen has various applications, including in welding, ammonia production, and as a clean fuel.
Key Concepts
- -- Diatomic Molecule
- A molecule composed of two atoms, in the case of hydrogen, it exists as H₂.
- -- Isotopes
- Variants of an element that have the same number of protons but different numbers of neutrons, exemplified by hydrogen's protium, deuterium, and tritium.
- -- Combustion
- A chemical reaction that occurs when a substance reacts with oxygen to release energy, notably, hydrogen burns in oxygen to form water.
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