Hydrogen (H)
Hydrogen (H, element 1) is a nonmetal in group 1, period 1. Atomic mass 1.008, electron configuration 1s¹, uses and facts.
About Hydrogen
Hydrogen is a nonmetal with the symbol H and atomic number 1. It is a gas at room temperature, and it sits in group 1, period 1 of the periodic table. Hydrogen was discovered in 1766 by Henry Cavendish.
Hydrogen key facts
- Atomic number: 1
- Symbol: H
- Atomic mass: 1.008 u
- Category: nonmetal
- Group: 1
- Period: 1
- State at room temperature: gas
- Electron configuration: 1s¹
- Electronegativity (Pauling): 2.2
- Melting point: 13.99 K (-259.16 °C)
- Boiling point: 20.27 K (-252.88 °C)
- Density: 0.00009 g/cm³
- Common oxidation states: −1, 0, +1
Electron configuration
The electron configuration of hydrogen is 1s¹. It shows how the electrons fill their subshells. Hydrogen has 1 valence electron.
Uses of hydrogen
- Fuel cells
- Ammonia production
- Rocket fuel
Did you know?
Most abundant element in the universe, 75% of all normal matter.
Other elements in group 1 and neighbours
Frequently asked questions
What is the atomic number of hydrogen?
The atomic number of hydrogen is 1, which means every hydrogen atom has 1 protons.
What is the electron configuration of hydrogen?
The electron configuration of hydrogen is 1s¹.
What group and period is hydrogen in?
Hydrogen is a nonmetal in group 1, period 1.
What state is hydrogen at room temperature?
Hydrogen is a gas at room temperature.
What is hydrogen used for?
Hydrogen is used for fuel cells, ammonia production, rocket fuel.