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Periodic Table Element Comparison: Compare Elements - Americium vs Lanthanum

Compare Americium and Lanthanum

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

Facts

Americium
95
Am
243
Solid
Silver
actinide
N/A
 
7
f
[Rn] 5f7 7s2
1176 °C
2011 °C
2, 8, 18, 32, 25, 8, 2
CAS7440-35-9
Neighborhood Elements of Americium
Lanthanum
57
La
138.9055
Solid
Silver
lanthanide
N/A
 
6
f
[Xe] 5d1 6s2
920 °C
3464 °C
2, 8, 18, 18, 9, 2
CAS7439-91-0
Neighborhood Elements of Lanthanum

History

History
The element Americium was discovered by Glenn T. Seaborg in year 1944 in United States. Americium derived its name from from The Americas, as the element was first synthesized on the continent, by analogy with europium
The element Lanthanum was discovered by Carl Gustaf Mosander in year 1839 in Sweden. Lanthanum derived its name derived its name from from the Greek lanthanein, meaning 'to lie hidden'

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
N/A
None
None
None
None
None
2×10-7%
2×10-7%
2.8e-07
3.4e-05
3.4×10-10%
N/A

Crystal Structure and Atomic Structure

175 pm
17.77615215801 cm3
N/A
N/A
74
americium Spectrum
346.81, 346.81, 1124.1 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

americium Crystal Structure
195 pm
22.600959973967 cm3
169 pm
N/A
8.98
lanthanum Spectrum
377.2, 377.2, 1214.4 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

lanthanum 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
95
95
95
243
148
2, 8, 18, 32, 25, 8, 2
[Rn] 5f7 7s2
5f7 7s2
 2;3;4;5;6;7
8S7/2
americium Shells
57
57
57
138.9055
81.9055
2, 8, 18, 18, 9, 2
[Xe] 5d1 6s2
5d1 6s2
 1;2;3
2D3/2
lanthanum Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
None.
Naturally occurring stable isotopes:
139La.

Chemical Properties: Ionization Energies and electron affinity

4
1.3
N/A
578 kJ/mol
3
1.1
48 kJ/mol
538.1, 1067, 1850.3, 4819, 5940 kJ/mol

Physical Properties

13.67 g/cm3
17.77615215801

 

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


 

N/A
N/A
N/A

 

N/A
N/A
0.6

 

10 W/(m K)
N/A

 

Paramagnetic
N/A
5.15×10-8
1.251×10-8
0.000704

 

N/A

 

N/A
6.146 g/cm3
22.600959973967

 

37 GPa
14 GPa
28 GPa
0.28


 

2.5 MPa
491 MPa
363 MPa

 

1.6×106 S/m
6.1×10-7 m Ω
4.88

 

13 W/(m K)
0.0000121 K-1

 

Paramagnetic
N/A
1.1×10-8
1.528×10-9
6.761e-05

 

N/A

 

2475 m/s

Thermal Properties - Enthalpies and thermodynamics

1176 °C
2011 °C
N/A
0.6

 

N/A
N/A
N/A
920 °C
3464 °C
N/A
4.88

 

6.2 kJ/mol
400 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-35-9
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A
CAS7439-91-0
N/A
4.1
3178
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A