Chemical Element #2: Helium (He)
Atomic Number: 2, Element Symbol: He, Element Name: Helium, Atomic Mass: 4.00260 u.
Detailed Properties:
| Atomic Number: | 2 |
| Element Symbol: | He |
| Element Name: | Helium |
| Electron Configuration: | 1s2 |
| Atomic Mass: | 4.002600 u |
| Melting Point: | 0.95 K |
| Boiling Point: | 4.22 K |
Stable Isotopes:
| Isotope | Mass | Abundance |
| 3He | 3.016029 | 0.000001 |
| 4He | 4.002603 | 0.999999 |
✍: FYIcenter.com
2021-07-20, 331👍, 0💬
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Molecule FYI-1000461
Molecule Summary: ID: FYI-1000461 SMILES: [Cl-].C[N+]1=C2C=CC=CC2=C(C2=C C=CC=C12)NCCReceived at FYIcenter.com on: 2021-07-13 2021-09-09, 1006🔥, 0💬
Molecule FYI-1000464
Molecule Summary: ID: FYI-1000464 SMILES: Received at FYIcenter.com on: 2021-07-19 2021-08-01, 878🔥, 0💬
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