Tabla

Electronic Configuration 1s1

Melting Point-2.5899x10²°C

Boiling Point-2.5272x10²°C

Density0.0708g cm⁻³

Description

Colourless, odourless gaseous chemical element. Lightest and most abundant element in the universe. Present in water and in all organic compounds. Chemically reacts with most elements. Discovered by Henry Cavendish in 1776.

Covalent Radius32pm

Ionisation Energies

Oxidation States-1, 0, +1

Uses

Most Hydrogen is used in the production of ammonia. Also used in balloons and in metal refining. Also used as fuel in rockets. Its two heavier isotopes are: deuterium (D) and tritium (T) used respectively for nuclear fission and fusion.

Electron Affinity72.769kJ mol⁻¹

Electronegativity2.2PAULING

Atomic Volume14.1cm³ mol⁻¹

Atomic Radius79pm

Van Der Waals Radius110pm

Sources

Commercial quantities are produced by reacting superheated steam with methane or Carbon. In lab work from reaction of metals with acid solutions or electrolysis.

Discovery

Discovered in 1766 by Henry Cavendish in England

Name Origin

Greek: hydro (water) and genes (generate)

CAS1333-74-0

Crust Abundance1400mg kg⁻¹

Sea Abundance1.08x10⁵mg dm⁻³

Enthalpy of Vapourisation 0.904kJ mol⁻¹

Enthalpy of Fusion0.117kJ mol⁻¹

Enthalpy of Formation218kJ mol⁻¹

Thermal Conductivity0.1815W (m ⋅ K)⁻¹

Isotope	Abundance	Half Life
1H	99.97%	-
2H	0.028%	-
3H	-	-

https://reuben.science

https://github.com/reubn/tabla

Using data from mendeleev.

MIT License Copyright (c) 2020 reubn Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. pb2bb3a9eb2b62a1fdf94