Home
 Compare Metals

What is Calcium?
Calcium


Periodic Table
Symbol
Ca
Group Number
2 16
Period Number
4 4
Block
s block
Element Family
Alkaline Earth
CAS Number
7440702 21
Space Group Name
Fm_ 3m
Space Group Number
225.00 3
Facts
Interesting Facts
  • Calcium ranks 5th rank in the list of earth’s abundance Percentage.
  • It is found in the compound state.
  • Gypsum or calcium sulfate is used as plaster and plaster of paris.
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
History
Who Discovered
Humphry Davy
Discovery
In 1808
Abundance
Abundance In Universe
0.01 % 4
Abundance In Sun
0.01 % 4
Abundance In Meteorites
1.10 % 4
Abundance In Earth's Crust
5.00 % 3
Abundance In Oceans
0.00 % 5
Abundance In Humans
1.40 % 1
Uses
Uses & Benefits
  • It is used as a reducing agent while preparing metals like thorium and uranium. It is also used as an alloying agent for metals such as aluminum, copper & lead.
  • Calcium carbonate or lime stone is used in cement.
Industrial Uses
Chemical Industry
Medical Uses
Dentistry, Pharmaceutical Industry
Other Uses
Alloys
Biological Properties
Toxicity
Non Toxic
Present in Human Body
Yes
In Blood
60.50 Blood/mg dm-3 4
In Bone
170,000.00 p.p.m. 1
Physical
Melting Point
839.00 °C 52
Boiling Point
1,484.00 °C 60
Appearance
Physical State
Solid
Color
Gray
Luster
-
Hardness
Mohs Hardness
1.75 18
Brinell Hardness
170.00 MPa 54
Vickers Hardness
170.00 MPa 56
Speed of Sound
3,810.00 m/s 26
Optical Properties
Refractive Index
1.54 35
Reflectivity
60.00 % 23
Allotropes
No
α Allotropes
-
β Allotropes
-
γ Allotropes
-
Chemical
Chemical Formula
Ca
Isotopes
Known Isotopes
19 20
Electronegativity
Pauling Electronegativity
1.00 46
Sanderson Electronegativity
0.95 43
Allred Rochow Electronegativity
1.04 35
Mulliken-Jaffe Electronegativity
1.08 45
Allen Electronegativity
1.03 56
Electropositivity
Pauling Electropositivity
3.00 9
Ionization Energies
1st Energy Level
589.80 kJ/mol 57
2nd Energy Level
1,145.40 kJ/mol 70
3rd Energy Level
4,912.40 kJ/mol 7
4th Energy Level
6,491.00 kJ/mol 15
5th Energy Level
8,153.00 kJ/mol 11
6th Energy Level
10,496.00 kJ/mol 14
7th Energy level
12,270.00 kJ/mol 12
8th Energy Level
14,206.00 kJ/mol 15
9th Energy Level
18,191.00 kJ/mol 12
10th Energy Level
20,385.00 kJ/mol 16
11th Energy Level
57,110.00 kJ/mol 3
12th Energy Level
63,410.00 kJ/mol 9
13th Energy Level
70,110.00 kJ/mol 3
14th Energy Level
78,890.00 kJ/mol 4
15th Energy Level
86,310.00 kJ/mol 11
16th Energy Level
94,000.00 kJ/mol 6
17th Energy Level
104,900.00 kJ/mol 7
18th Energy Level
111,711.00 kJ/mol 8
19th Energy Level
590.60 kJ/mol 56
20th Energy Level
590.00 kJ/mol 53
21st Energy Level
590.60 kJ/mol 66
22nd Energy Level
590.00 kJ/mol 48
23rd Energy Level
590.60 kJ/mol 65
24th Energy Level
590.60 kJ/mol 49
25th Energy Level
590.00 kJ/mol 51
26th Energy Level
590.60 kJ/mol 52
27th Energy Level
590.60 kJ/mol 52
28th Energy Level
590.60 kJ/mol 56
29th Energy Level
590.60 kJ/mol 57
30th Energy Level
590.00 kJ/mol 54
Electrochemical Equivalent
0.75 g/amp-hr 68
Electron Work Function
2.87 eV 49
Other Chemical Properties
Chemical Stability, Flammability, Ionization, Solubility
Atomic
Atomic Number
20 86
Electron Configuration
[Ar] 4s2
Crystal Structure
Face Centered Cubic (FCC)
Crystal Lattice
FCC-Crystal-Structure-of-Calcium.jpg#100
Atom
Number of Protons
20 85
Number of Neutrons
20 65
Number of Electrons
20 85
Radius of an Atom
Atomic Radius
197.00 pm 8
Covalent Radius
176.00 pm 24
Van der Waals Radius
231.00 pm 23
Atomic Weight
40.08 amu 80
Atomic Volume
29.90 cm3/mol 10
Adjacent Atomic Numbers
Previous Element
9
Next Element
60
Valence Electron Potential
29.00 (-eV) 55
Lattice Constant
558.84 pm 10
Lattice Angles
π/2, π/2, π/2
Lattice C/A Ratio
1.55 46
Mechanical
Density
Density At Room Temperature
1.55 g/cm3 85
Density When Liquid (at m.p.)
1.38 g/cm3 87
Tensile Strength
20.00 MPa 46
Viscosity
0.00 6
Vapor Pressure
Vapor Pressure at 1000 K
25.50 (Pa) 3
Vapor Pressure at 2000 K
0.00 (Pa) 30
Elasticity properties
Shear Modulus
7.40 GPa 56
Bulk Modulus
17.00 GPa 55
Young's Modulus
20.00 GPa 51
Poisson Ratio
0.31 13
Other Mechanical Properties
-
Magnetic
Magnetic Characteristics
Specific Gravity
4.58 73
Magnetic Ordering
Diamagnetic
Permeability
0.00 H/m 9
Susceptibility
0.00 24
Electrical Properties
Electrical Property
Conductor
Resistivity
33.60 nΩ·m 49
Electrical Conductivity
0.30 106/cm Ω 6
Electron Affinity
2.37 kJ/mol 45
Thermal
Specific Heat
0.63 J/(kg K) 7
Molar Heat Capacity
25.93 J/mol·K 42
Thermal Conductivity
201.00 W/m·K 5
Critical Temperature
1,115.00 K 55
Thermal Expansion
22.30 µm/(m·K) 20
Enthalpy
Enthalpy of Vaporization
150.00 kJ/mol 69
Enthalpy of Fusion
8.54 kJ/mol 48
Enthalpy of Atomization
184.00 kJ/mol 58
Standard Molar Entropy
41.60 J/mol.K 50
Periodic Table >>
<< All

Alkali Metals

Compare Alkali Metals

Alkali Metals

» More Alkali Metals

Compare Alkali Metals

» More Compare Alkali Metals
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!