Hydrogen element (H) is in group 1 and period 1 of a periodic table. Hydrogen is placed along with the alkali metals because it has similar electronic configuration as that of group 1 elements.
There is a lot more information related to hydrogen which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Hydrogen element (Information Table)
- Hydrogen element in Periodic table
- Facts about Hydrogen
- Properties of Hydrogen
- Uses of Hydrogen
Hydrogen Element (Information Table)
The important data related to hydrogen element is given in the table below.
|Appearance of hydrogen||Colorless gas|
|Atomic number of hydrogen||1|
|Symbol of hydrogen||H|
|Atomic mass of hydrogen||1.008 u|
|Protons, Neutrons & Electrons in hydrogen||Protons: 1, Neutrons: 0, Electrons: 1|
|State of hydrogen (at STP)||Gas|
|Group number of hydrogen in periodic table||1|
|Period number of hydrogen in periodic table||1|
|Block of hydrogen in periodic table||s-block|
|Category of hydrogen||Other nonmetals|
|Bohr model or Electrons per shell or Electrons arrangement in hydrogen||1 electron in 1st shell|
|Electron configuration of hydrogen||1s1|
|Orbital diagram of hydrogen|
|Valence electrons in hydrogen||1|
|Electronegativity of hydrogen (on pauling scale)||2.2|
|Atomic radius of hydrogen (van der Waals radius)||120 picometers|
|Density of hydrogen||0.0898 g/L|
|1st ionization energy of hydrogen||13.598 eV|
|Main isotope of hydrogen||1H, 2H|
|Melting point of hydrogen||13.99 K or -259.16 °C or -434.49 °F|
|Boiling point of hydrogen||20.271 K or -252.87 °C or -423.18 °F|
|Crystal structure of hydrogen||Hexagonal|
|Discovery of hydrogen||By Henry Cavendish in 1766|
Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).
Hydrogen element in Periodic table
The Hydrogen element (H) has the atomic number 1 and is located in group 1 and period 1. Hydrogen is in gaseous state at STP and it is classified as other nonmetals element.
Click on above elements in the periodic table to see their information.
Facts about hydrogen
Here are a few interesting facts about hydrogen element.
- Out of all the 118 elements, the hydrogen element is the element that does not have neutrons.
- Hydrogen is the highly abundant element present in the universe, it is approximately 74%.
- As hydrogen is a light gas, it does not stay in the earth’s atmosphere.
- Hydrogen is present in all living beings. The water present in our body contains hydrogen in it (because the chemical formula of water is H2O).
- The atmosphere of stars contains hydrogen and helium in very large quantities.
- According to the research done by the scientists, it is believed that the hydrogen gas was produced during the big bang.
Properties of hydrogen
Here is a list of some physical properties and chemical properties of hydrogen.
Physical properties of hydrogen
- Hydrogen is in gaseous state at STP and it is colorless, odorless and tasteless.
- The atomic mass of hydrogen is 1.008 amu and it is 14.5 times lighter than air.
- Hydrogen gas has the lowest density out of all the gases present on the periodic table.
- The van der Waals atomic radius of a hydrogen atom is 120 picometers.
- The melting point and boiling point of hydrogen is 13.99 K and 20.271 K respectively.
Chemical properties of hydrogen
- Hydrogen is highly flammable and it catches fire very easily.
- Hydrogen can easily form compounds with halogens like fluorine, chlorine, bromine, iodine, etc. It also forms compounds with other nonmetals.
- Hydrogen has the electron configuration of 1s1, which means that it can either gain one electron or lose one electron during a chemical reaction. If it loses an electron, then it will form H+ ion; and if it gains one electron, then it will form H– ion.
- Heating of the hydrogen gas can cause explosion or violent combustion.
- The auto ignition temperature of hydrogen gas is 500 °C, that means the hydrogen gas ignites on its own at this temperature without any external spark or flame.
Uses of hydrogen
Here are some uses of the hydrogen element.
- As hydrogen is the lightest gas, it is used in balloons and airships.
- Hydrogen is also used in chemical industries in production of ammonia.
- Hydrogen can be used in fuel cells to generate electricity.
- The liquid hydrogen and liquid oxygen are used as a cryogenic fuel in rockets.
- Hydrogen is also used as a shielding gas in atomic hydrogen welding.
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