The Elements: Hydrogen

Hydrogen is the lightest element, consisting of atoms with one proton. It forms molecules by bonding with another hydrogen atom. Highly flammable and reactive, hydrogen is crucial in forming water and powering the sun through nuclear fusion. It is a primary component of gas giants like Jupiter and is used on Earth in rocket fuel and airships. Hydrogen fuel cells offer a clean energy alternative. It is the most abundant element, making up three-quarters of the universe's mass.

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