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Periodic Table Element Comparison: Compare Elements - Helium vs Palladium

Compare Helium and Palladium

Compare Helium and Palladium 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 Palladium with most reliable information about their properties, attributes, facts, uses etc. You can compare He vs Pd 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
Palladium
46
Pd
106.42
Solid
Silver
transition metal
10
nickel family 
5
d
[Kr] 4d10
1554.9 °C
2963 °C
2, 8, 18, 18
CAS7440-05-3
Neighborhood Elements of Palladium

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 Palladium was discovered by William Hyde Wollaston in year 1803 in United Kingdom. Palladium derived its name derived its name from from the then recently discovered asteroid Pallas, considered a planet at the time

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%
3×10-7%
6.6e-07
6.3×10-7%
N/A
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
169 pm
8.8513682109291 cm3
131 pm
163 pm
6.9
palladium Spectrum
389.07, 389.07, 389.07 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

palladium 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
46
46
46
106.42
60.42
2, 8, 18, 18
[Kr] 4d10
4d10
 1;2;3;4;5;6
1S0
palladium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
3He, 4He.
Naturally occurring stable isotopes:
102Pd, 104Pd, 105Pd, 106Pd, 108Pd, 110Pd.

Chemical Properties: Ionization Energies and electron affinity

0
N/A
0 kJ/mol
2372.3, 5250.5 kJ/mol
4
2.2
53.7 kJ/mol
804.4, 1870, 3177 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
12.023 g/cm3
8.8513682109291

 

121 GPa
44 GPa
180 GPa
0.39


 

4.75 MPa
461 MPa
37.3 MPa

 

1×107 S/m
1×10-7 m Ω
N/A

 

72 W/(m K)
0.0000118 K-1

 

Paramagnetic
N/A
6.57×10-8
6.992×10-9
0.0007899

 

N/A

 

3070 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
1554.9 °C
2963 °C
N/A
N/A

 

16.7 kJ/mol
380 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
CAS7440-05-3
RTECSRT3480500
4.2
3200
N/A
0
N/A
1
0

 

N/A
N/A