I-helium yinxalenye yesibini ekhanyayo neyesibini eninzi kwihlabathi elibonakalayo.
Iimpawu Zobuchopho
| Ii-atom | 4.0026 u |
| Uxinano | 0.0001785 g/cm³ |
| Incopho yokubila: | 0.95 K |
| Incopho yokubila: | 4.22 K |
| Ukubonakala | Igesi engenambala |
| I-State at Room Temp | I-Gas |
Iimpawu zekhemikhali
| I-Ionization Energy | 2372.3 kJ/mol |
| Electronegativity: | -48.0 kJ/mol |
| Iindawo zokuthambisa | 0 |
Iimpahla zephetshana elichazayo:
| Uqwalaselo lwe Electron | 1s2 |
| Atomic radius: | 31.0 pm |
| I-Covalent Radius | 28.0 pm |
| I-Van der Waals Radius | 140.0 pm |
Ukufumana kwakhona
| Ifunyenwe Ngu | Pierre Janssen, Joseph Norman Lockyer |
| Unyaka Wophando | 1868 |
| Indawo | Guntur, India / London, England |
| Igama Elilandelayo | IsiGrike 'helios' kuthetha ilanga |
I-About Helium
I-Helium yi-gas engenambala, engenaphunga, engasebenziyo ye-monatomic eqhuba uthotho lwegesi entle. Incopho ephantsi yokubila yazo zonke izinto kwi 4. 22 K kwaye ingagqitywa kuphela phantsi koxinzelelo. I-Helium ikhiwa kwihlabathi nge-radioactive alpha decay yezinto ezinzima. Yafunyanwa kuqala nge-spectroscopically kwilanga phambi kokuba ifunyanwe kwihlabathi.
Iinkqubo
Izixhobo zokufudumeza, i-MRI, iibheloni zeqela, ulwandle olunzulu lokutyibilika, uthelekiso lwegesi, ukukhangela uthuli, kunye nokwenziwa kwee-semiconductors.
Inyathelo 1:
I-helium yinxalenye ekuphela kwayo efunyenwe kwisithuba phambi kokuba ifumaneke emhlabeni, yafumaniswa kuqala kwispectrum yelanga ngexesha lokuvala kwelanga ngo-1868.
I-Isotopes
| Inani le-Mass | Uninzi | Ixesha eliphakathi | Iqinile |
| 3 | 0.00000134% | - | Ewe |
| 4 | 0.99999866% | - | Ewe |
Uqwalaselo lwe Electron
1s2