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Periodic Table Element Comparison: Compare Elements - Hafnium vs Rhenium

Compare Hafnium and Rhenium

Compare Hafnium and Rhenium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Hafnium vs Rhenium with most reliable information about their properties, attributes, facts, uses etc. You can compare Hf vs Re on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1

2

3

4

5

6

57 - 71
La - Lu

7

2
8
18
32
18
8
1

2
8
18
32
18
8
2

89 - 103
Ac - Lr

2
8
18
32
32
10
2

2
8
18
32
32
11
2

2
8
18
32
32
12
2

2
8
18
32
32
13
2

2
8
18
32
32
14
2

2
8
18
32
32
15
2

2
8
18
32
32
16
2

2
8
18
32
32
17
2

2
8
18
32
32
18
2

2
8
18
32
32
18
3

2
8
18
32
32
18
4

2
8
18
32
32
18
5

2
8
18
32
32
18
6

2
8
18
32
32
18
7

2
8
18
32
32
18
8

2
8
18
32
18
9
2

2
8
18
32
18
10
2

2
8
18
32
20
9
2

2
8
18
32
21
9
2

2
8
18
32
22
9
2

2
8
18
32
24
8
2

2
8
18
32
25
8
2

2
8
18
32
25
9
2

2
8
18
32
27
8
2

2
8
18
32
28
8
2

2
8
18
32
29
8
2

2
8
18
32
30
8
2

2
8
18
32
31
8
2

2
8
18
32
32
8
2

2
8
18
32
32
8
3

hafnium

hafnium Shell Structure

72 Hf Hafnium

rhenium

rhenium Shell Structure

75 Re Rhenium

Periodic Table Element Comparison

Facts

Name
Atomic Number
Atomic Symbol
Atomic Weight
Phase
Color
Classification
Group in Periodic Table
Group Name
Period in Periodic Table
Block in Periodic Table
Electronic Configuration
Melting Point
Boiling Point
Electronic Shell Structure
CAS Number
Neighborhood Elements

Hafnium
72
Hf
178.49
Solid
Gray
transition metal
4
titanium family
6
d
[Xe] 4f14 5d2 6s2
2233 °C
4603 °C
2, 8, 18, 32, 10, 2
CAS7440-58-6
Neighborhood Elements of Hafnium

Rhenium
75
Re
186.207
Solid
Gray
transition metal
7
manganese family
6
d
[Xe] 4f14 5d5 6s2
3186 °C
5596 °C
2, 8, 18, 32, 13, 2
CAS7440-15-5
Neighborhood Elements of Rhenium

History

History

The element Hafnium was discovered by Dirk Coster in year 1923 in Denmark. Hafnium derived its name from from Hafnia, the New Latin name for Copenhagen

The element Rhenium was discovered by Masataka Ogawa in year 1925 in Germany. Rhenium derived its name derived its name from from Rhenus, the Latin name for the river Rhine

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)

Abundance in Universe
Abundance in Sun
Abundance in Meteorites
Abundance in Earth's Crust
Abundance in Oceans
Abundance in Humans

7×10-8%
1×10-7%
1.7e-07
3.3e-06
8×10-10%
N/A

2×10-8%
1×10-8%
4.9×10-6%
2.6×10-7%
1×10-10%
N/A

Crystal Structure and Atomic Structure

Atomic Radius
Atomic Volume
Covalent Radius
Van der Waals Radius
Neutron Cross Section
Atomic Spectrum
Lattice Constant
Lattice Angle
Space Group Name
Space Group Number
Crystal Structure

208 pm
13.410217881292 cm³
150 pm
N/A
104

319.64, 319.64, 505.11 pm
π/2, π/2, 2 π/3
P63/mmc
194
Simple Hexagonal

188 pm
8.8585632730733 cm³
159 pm
N/A
90

276.1, 276.1, 445.6 pm
π/2, π/2, 2 π/3
P63/mmc
194
Simple Hexagonal

Atomic and Orbital Properties

Atomic Number
Number of Electrons (with no charge)
Number of Protons
Mass Number
Number of Neutrons
Shell structure (Electrons per energy level)
Electron Configuration
Valence Electrons
Oxidation State
Atomic Term Symbol (Quantum Numbers)
Shell structure

72
72
72
178.49
106.49
2, 8, 18, 32, 10, 2
[Xe] 4f14 5d2 6s2
5d2 6s2
-2 1;2;3;4
³F₂

75
75
75
186.207
111.207
2, 8, 18, 32, 13, 2
[Xe] 4f14 5d5 6s2
5d5 6s2
-3;-1 1;2;3;4;5;6;7
⁶S_5/2

Isotopes - Nuclear Properties

Isotopes

Naturally occurring stable isotopes: 176Hf, 177Hf, 178Hf, 179Hf, 180Hf.

Naturally occurring stable isotopes: 185Re.

Chemical Properties: Ionization Energies and electron affinity

Valence or Valency
Electronegativity
ElectronAffinity
Ionization Energies

4
1.3
0 kJ/mol
658.5, 1440, 2250, 3216 kJ/mol

7
1.9
14.5 kJ/mol
760, 1260, 2510, 3640 kJ/mol

Physical Properties

Density
Molar Volume
Elastic Properties
Young Modulus
Shear Modulus
Bulk Modulus
Poisson Ratio
Hardness - Tests to Measure of Hardness of Element
Mohs Hardness
Vickers Hardness
Brinell Hardness
Electrical Properties
Electrical Conductivity
Resistivity
Superconducting Point
Heat and Conduction Properties
Thermal Conductivity
Thermal Expansion
Magnetic Properties
Magnetic Type
Curie Point
Mass Magnetic Susceptibility
Molar Magnetic Susceptibility
Volume Magnetic Susceptibility
Optical Properties
Refractive Index
Acoustic Properties
Speed of Sound

13.31 g/cm3
13.410217881292

78 GPa
30 GPa
110 GPa
0.37

5.5 MPa
1760 MPa
1.7×103 MPa

3.3×106 S/m
3×10-7 m Ω
0.128

23 W/(m K)
5.9×10-6 K-1

Paramagnetic
N/A
5.3×10-9
9.46×10-10
7.05e-05

N/A

3010 m/s

21.02 g/cm3
8.8585632730733

463 GPa
178 GPa
370 GPa
0.3

7 MPa
2450 MPa
1320 MPa

5.6×106 S/m
1.8×10-7 m Ω
1.7

48 W/(m K)
6.2×10-6 K-1

Paramagnetic
N/A
4.56×10-9
8.49×10-10
9.59e-05

N/A

4.7×103 m/s

Thermal Properties - Enthalpies and thermodynamics

Melting Point
Boiling Point
Critical Temperature
Superconducting Point
Enthalpies
Heat of Fusion
Heat of Vaporization
Heat of Combustion

2233 °C
4603 °C
N/A
0.128

25.5 kJ/mol
630 kJ/mol
N/A

3186 °C
5596 °C
N/A
1.7

33 kJ/mol
705 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS Number
RTECS Number
DOT Hazard Class
DOT Numbers
EU Number
NFPA Fire Rating
NFPA Hazards
NFPA Health Rating
NFPA Reactivity Rating
More
AutoIgnition Point
Flashpoint

CAS7440-58-6
RTECSMG4600000
4.2
2545
N/A
N/A
N/A
N/A
N/A

N/A
N/A

CAS7440-15-5
RTECSVI0780000
N/A
N/A
N/A
N/A
N/A
N/A
N/A

N/A
N/A

Compare With Other Elements

Compare Hafnium with other Group 4 elements

Hafnium vs Titanium

Hafnium vs Zirconium

Hafnium vs Rutherfordium

Compare Hafnium with other transition metal

Compare Rhenium with other Group 7 elements

Rhenium vs Manganese

Rhenium vs Technetium

Rhenium vs Bohrium

Compare Rhenium with other transition metal