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Periodic Table Element Comparison: Compare Elements - Helium vs Terbium

Compare Helium and Terbium

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

Facts

Helium
2
He
4.002602
Gas
Colorless
noble gas
18
helium family or neon family 
1
p
1s2
N/A
-268.93 °C
2
CAS7440-59-7
Neighborhood Elements of Helium
Terbium
65
Tb
158.92534
Solid
Silver
lanthanide
N/A
 
6
f
[Xe] 4f9 6s2
1356 °C
3230 °C
2, 8, 18, 27, 8, 2
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Neighborhood Elements of Terbium

History

History
The element Helium was discovered by Pierre Janssen in year 1895 in Sweden and United Kingdom. Helium derived its name from from the Greek word helios, meaning 'sun'
The element Terbium was discovered by Carl Gustaf Mosander in year 1843 in Sweden. Terbium derived its name derived its name from from Ytterby, Sweden

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
0.23
0.23
N/A
5.5×10-7%
7.2×10-10%
N/A
5×10-8%
1×10-8%
3.9×10-6%
9.3e-07
1.4×10-11%
N/A

Crystal Structure and Atomic Structure

31 pm
22.423540616247 cm3
32 pm
140 pm
0.007
helium Spectrum
424.2, 424.2, 424.2 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

helium Crystal Structure
225 pm
19.336335320599 cm3
N/A
N/A
23
terbium Spectrum
360.1, 360.1, 569.36 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

terbium 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
2
2
2
4.002602
2.002602
2
1s2
1s2
 
1S0
helium Shells
65
65
65
158.92534
93.92534
2, 8, 18, 27, 8, 2
[Xe] 4f9 6s2
4f9 6s2
 1;2;3;4
6H15/2
terbium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
3He, 4He.
Naturally occurring stable isotopes:
159Tb.

Chemical Properties: Ionization Energies and electron affinity

0
N/A
0 kJ/mol
2372.3, 5250.5 kJ/mol
3
N/A
50 kJ/mol
565.8, 1110, 2114, 3839 kJ/mol

Physical Properties

0.1785 g/l
22.423540616247

 

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


 

N/A
N/A
N/A

 

N/A
N/A
N/A

 

0.1513 W/(m K)
N/A

 

Diamagnetic
N/A
-5.9×10-9
-2.36×10-11
-1.05×10-9

 

1.000035

 

970 m/s
8.219 g/cm3
19.336335320599

 

56 GPa
22 GPa
38.7 GPa
0.26


 

N/A
863 MPa
677 MPa

 

8.3×105 S/m
1.2×10-6 m Ω
N/A

 

11 W/(m K)
0.0000103 K-1

 

Paramagnetic
222 K
1.36e-05
2.161385×10-6
0.1117784

 

N/A

 

2620 m/s

Thermal Properties - Enthalpies and thermodynamics

N/A
-268.93 °C
5.19 K
N/A

 

0.02 kJ/mol
0.083 kJ/mol
N/A
1356 °C
3230 °C
N/A
N/A

 

10.8 kJ/mol
295 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-59-7
RTECSMH6520000
2.2
1963
N/A
0
N/A
1
0

 

N/A
N/A
CAS7440-27-9
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A