Symbol
Sn
  
Cr
  
Period Number
5
  
4
  
Block
p block
  
d block
  
Element Family
Post-Transition
  
Transition Metal
  
Space Group Name
I41/amd
  
Im_ 3m
  
Interesting Facts
- In the list of most abundant element Tin is ranked 49th.
- Tin metal does not react with water as well as does not corrode in it.
  
- Chromium is highly reactive, hence it is not found free in nature.
- Ores of Chromites mineral are the major source of Chromium metal.
- Almost 90% leather tanning is done with the help of chromium.
  
Sources
Found in Minerals, Mining
  
Found in Minerals, Mining, Ores of metals, Ores of Minerals
  
History
  
  
Who Discovered
Unknown
  
Louis Nicolas Vauquelin
  
Discovery
Before 3500 BC
  
In Between 1797 - 1798
  
Abundance
  
  
Abundance In Universe
1.5 * 10-3 %
  
7
Abundance In Sun
~0.0000009 %
  
19
Abundance In Earth's Crust
Uses & Benefits
- Tin-niobium alloy is used for producing superconducting magnets.
-
Tin salt known as a tin II chloride, it is used as a mordant and as a reducing agent for dyeing calico and silk.
  
- It is used to harden the steel and produces a stainless steel and other various alloys.
- It is also used to give proper finish to polished mirrors. Its chromium plates are used in bathroom fittings.
  
Industrial Uses
Automobile Industry, Chemical Industry, Food Industry
  
Automobile Industry, Chemical Industry
  
Medical Uses
Dentistry
  
NA
  
Other Uses
NA
  
Alloys
  
Biological Properties
  
  
Toxicity
Non Toxic
  
Highly Toxic
  
Present in Human Body
Yes
  
Yes
  
In Blood
0.38 Blood/mg dm-3
  
10
0.11 Blood/mg dm-3
  
12
In Bone
1.40 p.p.m.
  
16
0.33 p.p.m.
  
21
Melting Point
1,857.00 °C
  
14
Boiling Point
2,270.00 °C
  
99+
2,672.00 °C
  
39
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
Silver
  
Luster
NA
  
Metallic
  
Hardness
  
  
Vickers Hardness
Not Available
  
1,060.00 MPa
  
10
Speed of Sound
2,730.00 m/s
  
32
5,940.00 m/s
  
5
Optical Properties
  
  
Allotropes
Yes
  
No
  
α Allotropes
Grey Tin (alpha Tin, Tin Pest)
  
Not Available
  
β Allotropes
White Tin (Beta Tin)
  
Not Available
  
γ Allotropes
Rhombic Tin (gamma Tin)
  
Not Available
  
Chemical Formula
Sn
  
Cr
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
708.60 kJ/mol
  
33
26,130.00 kJ/mol
  
1
2nd Energy Level
1,411.80 kJ/mol
  
99+
28,750.00 kJ/mol
  
1
3rd Energy Level
2,943.00 kJ/mol
  
30
34,230.00 kJ/mol
  
1
4th Energy Level
3,930.30 kJ/mol
  
99+
37,066.00 kJ/mol
  
1
5th Energy Level
7,456.00 kJ/mol
  
13
97,510.00 kJ/mol
  
1
6th Energy Level
Not Available
  
105,800.00 kJ/mol
  
1
7th Energy level
Not Available
  
114,300.00 kJ/mol
  
1
8th Energy Level
Not Available
  
125,300.00 kJ/mol
  
1
9th Energy Level
Not Available
  
134,700.00 kJ/mol
  
1
10th Energy Level
Not Available
  
144,300.00 kJ/mol
  
1
11th Energy Level
Not Available
  
26,130.00 kJ/mol
  
12
12th Energy Level
Not Available
  
28,750.00 kJ/mol
  
13
13th Energy Level
Not Available
  
34,230.00 kJ/mol
  
10
14th Energy Level
Not Available
  
37,066.00 kJ/mol
  
12
15th Energy Level
Not Available
  
97,510.00 kJ/mol
  
1
16th Energy Level
Not Available
  
105,800.00 kJ/mol
  
2
17th Energy Level
Not Available
  
114,300.00 kJ/mol
  
3
18th Energy Level
Not Available
  
125,300.00 kJ/mol
  
4
19th Energy Level
Not Available
  
134,700.00 kJ/mol
  
5
20th Energy Level
Not Available
  
144,300.00 kJ/mol
  
7
21st Energy Level
Not Available
  
157,700.00 kJ/mol
  
7
22nd Energy Level
Not Available
  
166,090.00 kJ/mol
  
6
Electrochemical Equivalent
1.11 g/amp-hr
  
99+
0.32 g/amp-hr
  
99+
Other Chemical Properties
Ionization, Solubility
  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility
  
Electron Configuration
[Kr] 4d10 5s2 5p2
  
[Ar] 3d5 4s1
  
Crystal Structure
Tetragonal (TETR)
  
Body Centered Cubic (BCC)
  
Crystal Lattice
TETR-Crystal-Structure-of-Tin.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
118.71 amu
  
99+
Atomic Volume
16.30 cm3/mol
  
32
7.23 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Valence Electron Potential
83.50 (-eV)
  
14
170.00 (-eV)
  
4
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
7.37 g/cm3
  
99+
7.19 g/cm3
  
99+
Density When Liquid (at m.p.)
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Other Mechanical Properties
Ductile, Malleable
  
NA
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Antiferromagnetic
  
Electrical Properties
  
  
Electrical Property
Superconductor
  
NA
  
Resistivity
115.00 nΩ·m
  
28
125.00 nΩ·m
  
27
Electrical Conductivity
0.09 106/cm Ω
  
23
0.08 106/cm Ω
  
25
Electron Affinity
107.30 kJ/mol
  
8
64.30 kJ/mol
  
15
Specific Heat
0.23 J/(kg K)
  
28
0.45 J/(kg K)
  
12
Molar Heat Capacity
27.11 J/mol·K
  
20
23.35 J/mol·K
  
99+
Thermal Conductivity
66.80 W/m·K
  
25
93.90 W/m·K
  
17
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
22.00 µm/(m·K)
  
20
4.90 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
290.40 kJ/mol
  
32
348.80 kJ/mol
  
24
Enthalpy of Fusion
7.03 kJ/mol
  
99+
15.31 kJ/mol
  
20
Enthalpy of Atomization
301.30 kJ/mol
  
35
397.50 kJ/mol
  
21
Standard Molar Entropy
51.20 J/mol.K
  
29
23.80 J/mol.K
  
99+