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.
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.