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Titanium vs Rhodium

Titanium
Rhodium
Rhodium vs Titanium


Periodic Table
Symbol
Ti   
Rh   
Group Number
4   
14
9   
9
Period Number
4   
5   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
7440326   
99+
7440166   
99+
Space Group Name
P63/mmc   
Fm_ 3m   
Space Group Number
194.00   
5
225.00   
2
Facts
Interesting Facts
  • The only metal which burns in Nitrogen is Titanium.
  • Titanium is also known as corrosion resistant metal.
  
  • Rhodium is the rarest element out of all non-radioactive metals on the earth .
  • Rhodium is one of the most durable and hard metal, which also have high reflectance.
  
Sources
Found in Minerals, Mining   
Earth's crust, Found As a By-product, Found in Minerals, Mining   
History
  
  
Who Discovered
W. Gregor & J. Berzelius   
William Hyde Wollaston   
Discovery
In 1791   
In 1804   
Abundance
  
  
Abundance In Universe
3 * 10-4 %   
9
6 * 10-8 %   
26
Abundance In Sun
~0.0004 %   
9
~0.0000002 %   
25
Abundance In Meteorites
0.05 %   
11
0.00 %   
36
Abundance In Earth's Crust
0.66 %   
7
0.00 %   
99+
Abundance In Oceans
0.00 %   
15
Not Available   
Uses
Uses & Benefits
  • Its alloys are used in spacecraft, aircraft and ammunition industry.
  • Its pipes are used in distillation plants, submarines, hulls of big ships, etc.
  
  • Rhodium metal is mainly used in catalytic converters for cars as it reduces nitrogen oxides in exhaust gases.
  • It is used as an industrial catalyst for nitric acid, acetic acid, hydrogenation reaction, etc.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   
Medical Uses
Dentistry, Surgical Instruments Manufacturing   
NA   
Other Uses
Alloys, Jewellery, Sculptures, Statues   
Alloys   
Biological Properties
  
  
Toxicity
Non Toxic   
NA   
Present in Human Body
Yes   
No   
In Blood
0.05 Blood/mg dm-3   
16
Not Available   
Physical Properties
Melting Point
1,660.00 °C   
18
1,966.00 °C   
12
Boiling Point
3,287.00 °C   
22
3,727.00 °C   
17
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray-White   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
6.00   
6
6.00   
6
Brinell Hardness
716.00 MPa   
15
980.00 MPa   
9
Vickers Hardness
830.00 MPa   
14
1,100.00 MPa   
9
Speed of Sound
5,090.00 m/s   
9
4,700.00 m/s   
15
Optical Properties
  
  
Reflectivity
Not Available   
84.00 %   
4
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
Ti   
Rh   
Isotopes
  
  
Known Isotopes
23   
16
16   
23
Electronegativity
  
  
Pauling Electronegativity
1.54   
26
2.28   
3
Sanderson Electronegativity
1.09   
20
Not Available   
Allred Rochow Electronegativity
1.32   
23
1.45   
16
Allen Electronegativity
1.38   
32
1.56   
24
Electropositivity
  
  
Pauling Electropositivity
2.46   
28
1.72   
99+
Ionization Energies
  
  
1st Energy Level
658.80 kJ/mol   
39
719.70 kJ/mol   
29
2nd Energy Level
1,309.80 kJ/mol   
99+
1,740.00 kJ/mol   
26
3rd Energy Level
2,652.50 kJ/mol   
99+
2,997.00 kJ/mol   
27
4th Energy Level
4,174.60 kJ/mol   
32
Not Available   
5th Energy Level
9,581.00 kJ/mol   
5
Not Available   
6th Energy Level
11,533.00 kJ/mol   
6
Not Available   
7th Energy level
13,590.00 kJ/mol   
6
Not Available   
8th Energy Level
16,440.00 kJ/mol   
8
Not Available   
9th Energy Level
18,530.00 kJ/mol   
11
Not Available   
10th Energy Level
20,833.00 kJ/mol   
15
Not Available   
11th Energy Level
25,575.00 kJ/mol   
14
Not Available   
12th Energy Level
28,125.00 kJ/mol   
14
Not Available   
13th Energy Level
76,015.00 kJ/mol   
1
Not Available   
14th Energy Level
83,280.00 kJ/mol   
2
Not Available   
15th Energy Level
90,880.00 kJ/mol   
3
Not Available   
16th Energy Level
100,700.00 kJ/mol   
4
Not Available   
17th Energy Level
109,100.00 kJ/mol   
5
Not Available   
18th Energy Level
117,800.00 kJ/mol   
6
Not Available   
19th Energy Level
129,900.00 kJ/mol   
7
Not Available   
20th Energy Level
137,530.00 kJ/mol   
9
Not Available   
Electrochemical Equivalent
0.45 g/amp-hr   
99+
1.28 g/amp-hr   
99+
Electron Work Function
4.33 eV   
17
4.98 eV   
6
Other Chemical Properties
Chemical Stability, Ionization   
Anti Corrosion, Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
22   
99+
45   
99+
Electron Configuration
[Ar] 3d2 4s2   
[Kr] 4d8 5s1   
Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Titanium.jpg#100   
FCC-Crystal-Structure-of-Rhodium.jpg#100   
Atom
  
  
Number of Protons
22   
99+
45   
99+
Number of Neutrons
26   
99+
58   
99+
Number of Electrons
22   
99+
45   
99+
Radius of an Atom
  
  
Atomic Radius
147.00 pm   
34
134.00 pm   
99+
Covalent Radius
160.00 pm   
30
142.00 pm   
99+
Van der Waals Radius
200.00 pm   
28
200.00 pm   
28
Atomic Weight
47.87 amu   
99+
102.91 amu   
99+
Atomic Volume
10.64 cm3/mol   
99+
8.30 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Scandium
  
Ruthenium
  
Next Element
Vanadium
  
Palladium
  
Valence Electron Potential
95.20 (-eV)   
10
64.00 (-eV)   
22
Lattice Constant
295.08 pm   
99+
380.34 pm   
27
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
4.51 g/cm3   
99+
12.41 g/cm3   
28
Density When Liquid (at m.p.)
4.11 g/cm3   
99+
10.70 g/cm3   
14
Tensile Strength
434.00 MPa   
9
951.00 MPa   
5
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
0.98 (Pa)   
14
0.02 (Pa)   
19
Elasticity properties
  
  
Shear Modulus
44.00 GPa   
17
150.00 GPa   
6
Bulk Modulus
110.00 GPa   
15
275.00 GPa   
5
Young's Modulus
116.00 GPa   
18
380.00 GPa   
5
Poisson Ratio
0.32   
12
0.26   
22
Other Mechanical Properties
Ductile   
Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
4.51   
99+
12.41   
20
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Poor Conductor   
Conductor   
Resistivity
420.00 nΩ·m   
12
43.30 nΩ·m   
99+
Electrical Conductivity
0.02 106/cm Ω   
99+
0.21 106/cm Ω   
8
Electron Affinity
7.60 kJ/mol   
37
109.70 kJ/mol   
7
Thermal Properties
Specific Heat
0.52 J/(kg K)   
9
0.24 J/(kg K)   
22
Molar Heat Capacity
25.06 J/mol·K   
99+
24.98 J/mol·K   
99+
Thermal Conductivity
21.90 W/m·K   
99+
150.00 W/m·K   
9
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
8.60 µm/(m·K)   
99+
8.20 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
429.00 kJ/mol   
15
495.40 kJ/mol   
12
Enthalpy of Fusion
15.48 kJ/mol   
19
21.76 kJ/mol   
10
Enthalpy of Atomization
468.60 kJ/mol   
15
556.50 kJ/mol   
12
Standard Molar Entropy
27.30 J/mol.K   
99+
31.50 J/mol.K   
99+
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