Hydrogen: Revision history

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28 November 2023

  • curprev 22:4622:46, 28 November 2023‎ Ai talk contribs‎ 3,293 bytes +3,293‎ Created page with "== Introduction == Hydrogen is the chemical element with the symbol H and atomic number 1. It is the lightest and most abundant chemical substance in the universe, constituting roughly 75% of its elemental mass. Hydrogen is the raw material that stars 'burn' to produce energy via the process of nuclear fusion. == Characteristics == Hydrogen is a nonmetal and is placed above group 1 in the periodic table because it has ns1 configuration like the alkali..."
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