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Periodic Table Element Comparison: Compare Elements - Promethium vs Scandium

Compare Promethium and Scandium

Compare Promethium and Scandium 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 Promethium vs Scandium with most reliable information about their properties, attributes, facts, uses etc. You can compare Pm vs Sc 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

promethium

promethium Shell Structure

61 Pm Promethium

scandium

scandium Shell Structure

21 Sc Scandium

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

Promethium
61
Pm
145
Solid
Silver
lanthanide
N/A

6
f
[Xe] 4f5 6s2
1.1×103 °C
3×103 °C
2, 8, 18, 23, 8, 2
CAS7440-12-2
Neighborhood Elements of Promethium

Scandium
21
Sc
44.95591
Solid
Silver
transition metal
3
scandium family
4
d
[Ar] 3d1 4s2
1541 °C
2830 °C
2, 8, 9, 2
CAS7440-20-2
Neighborhood Elements of Scandium

History

History

The element Promethium was discovered by Chien Shiung Wu in year 1945 in United States. Promethium derived its name from from Prometheus of Greek mythology who stole fire from the Gods and gave it to humans

The element Scandium was discovered by Lars Fredrik Nilson in year 1879 in Sweden. Scandium derived its name derived its name from from Scandia, the Latin name for Scandinavia

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

N/A
None
None
None
None
None

3×10-6%
4×10-6%
6.4e-06
2.6e-05
1.5×10-10%
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

205 pm
19.961453744493 cm³
N/A
N/A
8×103

N/A
N/A
N/A
N/A
Simple Hexagonal

184 pm
15.060606365159 cm³
144 pm
N/A
27.2

330.9, 330.9, 527.33 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

61
61
61
145
84
2, 8, 18, 23, 8, 2
[Xe] 4f5 6s2
4f5 6s2
2;3
⁶H_5/2

21
21
21
44.95591
23.95591
2, 8, 9, 2
[Ar] 3d1 4s2
3d1 4s2
1;2;3
²D_3/2

Isotopes - Nuclear Properties

Isotopes

Naturally occurring stable isotopes: None.

Naturally occurring stable isotopes: 45Sc.

Chemical Properties: Ionization Energies and electron affinity

Valence or Valency
Electronegativity
ElectronAffinity
Ionization Energies

3
N/A
50 kJ/mol
540, 1050, 2150, 3970 kJ/mol

3
1.36
18.1 kJ/mol
633.1, 1235, 2388.6, 7090.6, 8843, 10679, 13310, 15250, 17370, 21726, 24102, 66320, 73010, 80160, 89490, 9.74×104, 1.056×105, 1.17×105, 124270, 547530, 582163 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

7.264 g/cm3
19.961453744493

46 GPa
18 GPa
33 GPa
0.28

N/A
N/A
N/A

1.3×106 S/m
7.5×10-7 m Ω
N/A

15 W/(m K)
0.000011 K-1

N/A
N/A
N/A
N/A
N/A

N/A

N/A

2.985 g/cm3
15.060606365159

74 GPa
29 GPa
57 GPa
0.28

N/A
N/A
750 MPa

1.8×106 S/m
5.5×10-7 m Ω
0.05

16 W/(m K)
0.0000102 K-1

Paramagnetic
N/A
8.8×10-8
3.956×10-9
0.0002627

N/A

N/A

Thermal Properties - Enthalpies and thermodynamics

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

1.1×103 °C
3×103 °C
N/A
N/A

7.7 kJ/mol
290 kJ/mol
N/A

1541 °C
2830 °C
N/A
0.05

16 kJ/mol
318 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

CAS7440-12-2
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

N/A
N/A

CAS7440-20-2
N/A
4.1
3089
N/A
N/A
N/A
N/A
N/A

N/A
N/A

Compare With Other Elements

Compare Promethium with other Group N/A elements

Compare Promethium with other lanthanide

Promethium vs Lanthanum

Promethium vs Cerium

Promethium vs Praseodymium

Promethium vs Neodymium

Promethium vs Samarium

Promethium vs Europium

Promethium vs Gadolinium

Promethium vs Terbium

Promethium vs Dysprosium

Promethium vs Holmium

Promethium vs Erbium

Promethium vs Thulium

Promethium vs Ytterbium

Promethium vs Lutetium

Compare Scandium with other Group 3 elements

Scandium vs Yttrium

Scandium vs Lutetium

Scandium vs Lawrencium

Compare Scandium with other transition metal