Tabla

Electronic ConfigurationAr 4s2

Melting Point839°C

Boiling Point1484°C

Density1.55g cm⁻³

Description

Soft grey metallic element belonging to group 2 of the periodic table. Used a reducing agent in the extraction of Thorium, Zirconium and Uranium. Essential element for living organisms.

Covalent Radius171pm

Double147pm

Triple133pm

Ionisation Energies

Oxidation States0, +2

Uses

Used by many forms of life to make shells and bones. Virtually no use for the pure metal, however two of its compounds are, lime (CaO) and gypsum (CaSO₄), are in great demand by a number of industries.

Electron Affinity2.3687kJ mol⁻¹

Electronegativity1PAULING

Atomic Volume29.9cm³ mol⁻¹

Atomic Radius197pm

Metallic Radius174pm

Van Der Waals Radius231pm

Sources

Obtained from minerals like chalk, limestone & marble. Pure metal is produced by replacing the Calcium in lime (Calcium carbonate, CaCO₃) with aluminium in hot, low pressure retorts.

Discovery

Discovered in 1808 by Sir Humphrey Davy in England

Name Origin

Latin: calx, calcis (lime).

CAS7440-70-2

Crust Abundance4.15x10⁴mg kg⁻¹

Sea Abundance412mg dm⁻³

Enthalpy of Vapourisation 153.6kJ mol⁻¹

Enthalpy of Fusion9.2kJ mol⁻¹

Enthalpy of Formation177.8kJ mol⁻¹

Specific Heat - 20°C0.653J (g ⋅ K)⁻¹

Isotope	Abundance	Half Life
40Ca	96.94%	-
42Ca	0.647%	-
43Ca	0.135%	-
44Ca	2.086%	-
46Ca	0.004%	-
48Ca	0.187%	5.300x10¹⁹y
41Ca	-	-

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