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Periodic Table Element Comparison: Compare Elements - Beryllium vs Helium

Compare Beryllium and Helium

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

Facts

Beryllium
4
Be
9.012182
Solid
SlateGray
alkaline earth metal
2
beryllium family 
2
s
[He] 2s2
1287 °C
2470 °C
2, 2
CAS7440-41-7
Neighborhood Elements of Beryllium
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

History

History
The element Beryllium was discovered by Louis Nicolas Vauquelin in year 1797 in France. Beryllium derived its name from from beryl, a mineral
The element Helium was discovered by Pierre Janssen in year 1895 in Sweden and United Kingdom. Helium derived its name derived its name from from the Greek word helios, meaning 'sun'

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
1×10-7%
1×10-8%
2.9×10-6%
1.9e-06
6×10-11%
4×10-8%
0.23
0.23
N/A
5.5×10-7%
7.2×10-10%
N/A

Crystal Structure and Atomic Structure

112 pm
4.8767218614719 cm3
90 pm
N/A
0.0092
beryllium Spectrum
228.58, 228.58, 358.43 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

beryllium Crystal 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

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
4
4
4
9.012182
5.012182
2, 2
[He] 2s2
2s2
 1;2
1S0
beryllium Shells
2
2
2
4.002602
2.002602
2
1s2
1s2
 
1S0
helium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
9Be.
Naturally occurring stable isotopes:
3He, 4He.

Chemical Properties: Ionization Energies and electron affinity

2
1.57
0 kJ/mol
899.5, 1757.1, 14848.7, 21006.6 kJ/mol
0
N/A
0 kJ/mol
2372.3, 5250.5 kJ/mol

Physical Properties

1.848 g/cm3
4.8767218614719

 

287 GPa
132 GPa
130 GPa
0.032


 

5.5 MPa
1670 MPa
600 MPa

 

2.5×107 S/m
4×10-8 m Ω
0.026

 

190 W/(m K)
0.0000113 K-1

 

Diamagnetic
N/A
-1.26×10-8
-1.136×10-10
-2.328e-05

 

N/A

 

1.3×104 m/s
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

Thermal Properties - Enthalpies and thermodynamics

1287 °C
2470 °C
N/A
0.026

 

7.95 kJ/mol
297 kJ/mol
N/A
N/A
-268.93 °C
5.19 K
N/A

 

0.02 kJ/mol
0.083 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-41-7
RTECSDS1750000
6.1
1567
N/A
1
N/A
3
0

 

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

 

N/A
N/A

Compare With Other Elements