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Periodic Table Element Comparison: Compare Elements - Helium vs Dysprosium

Compare Helium and Dysprosium

Compare Helium and Dysprosium 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 Dysprosium with most reliable information about their properties, attributes, facts, uses etc. You can compare He vs Dy 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
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Neighborhood Elements of Helium
Dysprosium
66
Dy
162.5
Solid
Silver
lanthanide
N/A
 
6
f
[Xe] 4f10 6s2
1412 °C
2567 °C
2, 8, 18, 28, 8, 2
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Neighborhood Elements of Dysprosium

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 Dysprosium was discovered by Lecoq de Boisbaudran in year 1886 in France. Dysprosium derived its name derived its name from from the Greek dysprositos, meaning 'hard to get'

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
2×10-7%
2×10-7%
2.7e-07
6.2e-06
9.1×10-11%
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
228 pm
19.003625306982 cm3
N/A
N/A
1010
dysprosium Spectrum
359.3, 359.3, 565.37 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

dysprosium 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
66
66
66
162.5
96.5
2, 8, 18, 28, 8, 2
[Xe] 4f10 6s2
4f10 6s2
 2;3;4
5I8
dysprosium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
3He, 4He.
Naturally occurring stable isotopes:
156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164Dy.

Chemical Properties: Ionization Energies and electron affinity

0
N/A
0 kJ/mol
2372.3, 5250.5 kJ/mol
3
1.22
50 kJ/mol
573, 1130, 2.2×103, 3990 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
8.551 g/cm3
19.003625306982

 

61 GPa
25 GPa
41 GPa
0.25


 

N/A
540 MPa
500 MPa

 

1.1×106 S/m
9.1×10-7 m Ω
N/A

 

11 W/(m K)
9.9×10-6 K-1

 

Paramagnetic
87 K
5.45×10-6
8.85625×10-7
0.046603

 

N/A

 

2710 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
1412 °C
2567 °C
N/A
N/A

 

11.1 kJ/mol
280 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
CAS7429-91-6
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A