Hydrogen

Hydrogen [H] – Element Details, Facts, Properties, Trends, Uses, Comparison with other elements

Hydrogen

Hydrogen

Element 1 of Periodic table is Hydrogen with atomic number 1, atomic weight 1.00794. Hydrogen, symbol H, has a Simple Hexagonal structure and Colorless color. Hydrogen is a other nonmetal element. Trivial name of Hydrogen is alkali metals*. Know everything about Hydrogen

hydrogen Gas

Hydrogen History

The element Hydrogen was discovered by Henry Cavendish in year 1766 in United Kingdom . Hydrogen derived its name from the Greek elements hydro- and -gen meaning ‘water-forming’

Hydrogen is a chemical element with chemical symbol H and atomic number 1. With an atomic weight of 1.00794 u, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass.

How to Locate Hydrogen on Periodic Table

Periodic table is arranged by atomic number, number of protons in the nucleus which is same as number of electrons. The atomic number increases from left to right. Periodic table starts at top left ( Atomic number 1) and ends at bottom right (atomic number 118). Therefore you can directly look for atomic number 1 to find Hydrogen on periodic table.

Another way to read periodic table and locate an element is by using group number (column) and period number (row). To locate Hydrogen on periodic table look for cross section of group 1 and period 1 in the modern periodic table

Hydrogen Facts

Name
Hydrogen
Atomic Symbol
H
Atomic Number
1
Atomic Weight
1.00794
Phase
Gas
Colour
Colourless
Classification
other nonmetal
Group in Periodic Table
1
Group Name
lithium family
Period in Periodic Table
1
Block in Periodic Table
s-block
Electronic Configuration
1s1
Melting Point
-259.14 °C
Boiling Point
-252.87 °C
Electronic Shell Structure
[1]
CAS Number
CAS1333-74-0

Hydrogen Atomic and Orbital Properties

Hydrogen atoms have 1 electrons and the electronic shell structure is [1] with Atomic Term Symbol (Quantum Numbers) 2S1/2.

Hydrogen Atomic Structure
hydrogen isotopes

Properties

Atomic Structure of Hydrogen

Atomic Number
1
Atomic Radius
53 pm (0.53 Å)
Number of Electrons (with no charge)
1
Atomic Volume
11.2117908788 cm3
Number of Protons
1
Covalent Radius
37 pm (0.37 Å)
Mass Number
1
Van der Waals Radius
120 pm
Number of Neutrons
0
Neutron Cross Section
0.332 σa/barns
Shell structure (Electrons per energy level)
[1]
Electron Configuration
1s1
Valence Electrons
1s1
Oxidation State
-1

Ground State Electronic Configuration of Hydrogen – neutral Hydrogen atom

The ground state electronic configuration of Neutral Hydrogen atom is 1s1. The portion of Hydrogen configuration that is equivalent to the noble gas of the preceding period, is abbreviated as 1s1]. For atoms with many electrons, this notation can become lengthy and so an abbreviated notation is used.This is important as it is the Valence electrons 1s1, electrons in the outermost shell that determine the chemical properties of the element.

Unabbreviated electronic configuration of neutral Hydrogen

Complete ground state electronic configuration for the Hydrogen atom, Unabbreviated electronic configuration

1s1

Atomic Spectrum of Hydrogen

Atomic Spectrum of Lithium
Preparation for NEET Examination 2022 IIT JAM Exam Preparation Know Your Kids Learning Place