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- Name: Hydrogen
- Symbol: H
- Atomic Number: 1
- Atomic Weight: 1.00784 u
- Period: 1
- Group: 1
21 Hydrogen Facts for Kids
- Hydrogen is a chemical element on the periodic table.
- Hydrogen was discovered by English chemist and physicist Henry Cavendish in 1766.
- Hydrogen was named by French chemist Antoine Lavoisier in 1783.
- Hydrogen is a gas at room temperature.
- The symbol for hydrogen is H.
- The atomic number for hydrogen is 1.
- The standard atomic weight for hydrogen is 1.00784 u.
- Hydrogen is in the reactive nonmetal element category on the periodic table.
- 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 (1H or hydrogen-1), deuterium (2H or hydrogen-2) and tritium (3H or hydrogen-3).
- The melting point for hydrogen is -439.49 °F (-259.16 °C).
- The boiling point for hydrogen is -423.182 °F (-252.879 °C).
- Hydrogen is the most abundant element found in the universe.
- Hydrogen is the lightest chemical element on the periodic table.
- All the non-remnant stars in our universe are made mostly out of hydrogen in a plasma state.
- The Sun in our Solar System produces energy by fusing hydrogen into helium.
- The mass of the Sun in our Solar System is about 73% hydrogen.
- Hydrogen is a popular coolant used by power stations to cool generators.
- Tritium is used in thermonuclear weapons, also known as hydrogen bombs or H bombs.
- It’s a common myth that hydrogen is an energy source. There are no current processes that use hydrogen to produce energy outside of hypothetical ideas.
Additional Resources on Hydrogen