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Periodic Table Element Comparison: Compare Elements - Actinium vs Scandium

Compare Actinium and Scandium

Compare Actinium 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 Actinium vs Scandium with most reliable information about their properties, attributes, facts, uses etc. You can compare Ac vs Sc on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Facts

Actinium
89
Ac
227
Solid
Silver
actinide
N/A
 
7
f
[Rn] 6d1 7s2
1050 °C
3200 °C
2, 8, 18, 32, 18, 9, 2
CAS7440-34-8
Neighborhood Elements of Actinium
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 Actinium was discovered by Friedrich Oskar Giesel in year 1899 in France. Actinium derived its name from from the Greek aktis, 'ray'
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 %)
N/A
None
N/A
N/A
N/A
None
3×10-6%
4×10-6%
6.4e-06
2.6e-05
1.5×10-10%
N/A

Crystal Structure and Atomic Structure

195 pm
22.542204568024 cm3
N/A
N/A
810
actinium Spectrum
567, 567, 567 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

actinium Crystal Structure
184 pm
15.060606365159 cm3
144 pm
N/A
27.2
scandium Spectrum
330.9, 330.9, 527.33 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

scandium Crystal Structure

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
89
89
89
227
138
2, 8, 18, 32, 18, 9, 2
[Rn] 6d1 7s2
6d1 7s2
 3
2D3/2
actinium Shells
21
21
21
44.95591
23.95591
2, 8, 9, 2
[Ar] 3d1 4s2
3d1 4s2
 1;2;3
2D3/2
scandium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
None.
Naturally occurring stable isotopes:
45Sc.

Chemical Properties: Ionization Energies and electron affinity

3
1.1
N/A
499, 1170 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

10.07 g/cm3
22.542204568024

 

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


 

N/A
N/A
N/A

 

N/A
N/A
N/A

 

12 W/(m K)
N/A

 

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

1050 °C
3200 °C
N/A
N/A

 

14 kJ/mol
400 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

CAS7440-34-8
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