Periodic Moos
Overview
- Latin name:
Helium - Hanow Sowsnek:
Helium - Diskudhans year:
1868 - Discoverer:
Pierre Jules César Janssen, Joseph Norman Lockyer - Pow an Diskudhans:
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- Costu per 100 grammi:
2.5 USD - CAS Number:
CAS7440-59-7 - Elektron shell:
K2-L0-M0-N0-O0-P0-Q0-R0
Elektrons:
2
Protons:
2
Neutrons:
2
Properties
- Niver atomek:
2 - Atomek poester (Relative atomek mass):
4.00260128098301 (g/mol) - Tewder:
0.0001785 (g/cm³) - Poynt tedha:
-273.15°C = -459.67°F = 0.00K - Poynt bryjyon:
-268.928°C = -452.07°F = 4.22K - Valence:
0 - Period:
1 - Group:
VIIIA - Block:
s - block - Spektrum dyllans:
Perthyansow thermodynamek
- Phase:
Gas
- Fusion heat:
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Atomek properties
- Elektron configuration:
1s2 - 0
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- Ion kost:
---- - Galloes ionheans an atom:
24.547 (eV) - Atomek radius:
31 (pm) - Radius kovalent:
37 (pm) - Radius Van der Waals:
140 (pm)
Studhow oksidyans:
Perthyansow elektromagnetek
- Tredanel conductivity:
---- - Tredanel type:
---- - Eghen vagnetek:
Diamagnetic - Susceptibilita magnetek folum:
-1.05 ⋅ 10-9 - Susceptibilita magnetek poes:
-5.9 ⋅ 10-9 - Susceptibilita magnetek molar:
-2.36 ⋅ 10-11 (m³/mol) - Resistivity:
---- - Poynt ughhedhesedh:
----
Crystal bagh
- Structure of the grid:
Hweghhornek stroth-fardellys - Grid parameters:
a=3.570 Å; c=5.84 Å - Stons
1.633 | 0
- Tempredh Debye:
----
Keworansel information
- Color:
Upgrade dhe the pro version ha get moy didheurek information a-dro the elvennow - CAS Number:
CAS7440-59-7 - CID Number:
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Upgrade dhe the pro version ha get moy didheurek information a-dro the elvennow - Kaletter Brinell:
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Reactivity
- Electronegativity:
---- - Valence:
0 - Elektron affinity:
-48.0 (kJ/mole)
Perthyansow nuklerek
- Radioactive:
Na - Half life, s:
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- Fire hazard:
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Prevalence
- Universe consists of "Helyum" on
23.0% - Howl consists of "Helyum" on
27.1% - Oceans consists of "Helyum" on
7.2 ⋅ 10-8% - Human korf consists of "Helyum" on
---- - The an Norvys krestennen consists of "Helyum" on
8.0 ⋅ 10-7% - Meteorites konsystya of "Helyum" on
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