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Hydrogen is the simplest and most abundant element in the universe, constituting roughly 75% of its elemental mass. It's composed of just one proton and one electron, making it the lightest element on the periodic table. In its natural state, hydrogen is a colorless, odorless gas. It's essential for life as it's a key component of water and many organic molecules. | |||
Helium, on the other hand, is the second lightest and second most abundant element in the universe, mostly found in stars. It's produced through nuclear fusion in stars, primarily during the later stages of their life cycles. Helium is also colorless, odorless, and tasteless. It's commonly used in various industrial applications, such as cooling superconducting magnets in MRI machines, filling balloons, and as a shielding gas in arc welding. | |||
She/her/hers | |||
