| Nomor atom | 2 |
|---|---|
| Massa atom | 4.002602 |
| Nomor massa | 4 |
| Golongan | 18 |
|---|---|
| Periode | 1 |
| Blok | s |
| Proton | 2 p+ |
|---|---|
| Neutron | 2 n0 |
| Elektron | 2 e- |
| Jari-Jari Atom | |
|---|---|
| Volume molar | |
| Jari-jari kovalen | |
| Metallic Radius | |
| Jari-jari ion | |
| Crystal Radius | |
| Jari-jari van der Waals | |
| kepadatan |
| Energi | |
|---|---|
| proton affinity | |
| Afinitas elektron | |
| Energi ionisasi | |
| Panas penguapan | |
| kalor peleburan | |
| Perubahan entalpi pembentukan standar | |
| Elektron | |
| kelopak elektron | 2 |
| Elektron valensi | 2 ⓘ |
| konfigurasi elektron | 1s2ⓘ |
| bilangan oksidasi | |
| elektronegativitas | |
| Electrophilicity Index | |
| kondisi dasar materi | |
| fase zat | {ERROR}|
| gaseous state of matter | Monoatomic |
| Titik didih | |
| Titik lebur | |
| critical pressure | |
| critical temperature | |
| Titik tripel | |
| appearance | |
| warna | Hitam
|
| appearance | colorless gas, exhibiting a red-orange glow when placed in a high-voltage electric field |
| Indeks bias | 1,000035
|
| thermodynamic material property | |
| Kondusivitas termal | |
| Pemuaian | |
| molar heat capacity | |
| Kapasitas kalor molar | |
| heat capacity ratio | 5/3 |
| electrical properties | |
| tipe | |
| konduktivitas listrik | |
| resistivitas listrik | |
| superkonduktivitas | |
| magnetisme | |
| tipe | diamagnetic |
| Suseptibilitas magnetik batuan (Mass) | -0,0000000059 m³/Kg
|
| Suseptibilitas magnetik batuan (Molar) | -0,0000000000236 m³/mol
|
| Suseptibilitas magnetik batuan (Volume) | -0,00000000105
|
| magnetic ordering | |
| Curie temperature | |
| Néel temperature | |
| struktur | |
| Struktur kristal | {ERROR} |
| Konstanta kisi | |
| Lattice Angles | π/2, π/2, π/2 |
| mechanical property | |
| Kekerasan | |
| Modulus kompresi | |
| Modulus geser | |
| modulus Young | |
| Rasio Poisson | |
| kecepatan suara | |
| klasifikasi | |
| Kategori | Aktinida, Noble gases |
| CAS Group | VIII |
| IUPAC Group | VIIIA |
| Glawe Number | 1 |
| Mendeleev Number | 112 |
| Pettifor Number | 1 |
| Geochemical Class | volatile |
| Klasifikasi Goldschmidt | atmophile |
| Gas Basicity | |
|---|---|
| polarizability | |
| C6 Dispersion Coefficient | |
| allotrope | |
| neutron cross section | 0,007
|
| Neutron Mass Absorption | 0,00001
|
| Bilangan kuantum | 1S0 |
| Grup ruang | 225 (Fm_3m) |
| Isotop stabil | 2 |
|---|---|
| Isotop tidak stabil | 6 |
| Natural Isotopes | 2 |
| Nomor massa | 3 |
|---|---|
| nomor neutron | 1 |
| bobot atom | |
| g-factor | -4,25525062 ± 0,00000006
|
| natural abundance | 0,0002 ± 0,0002
|
| peluruhan radioaktif | isotop stabil |
| Waktu paruh | Not Radioactive ☢️ |
| Spin | 1/2 |
| nuclear quadrupole moment | 0
|
| tanggal penemuan | 1934 |
| parity | + |
| Nomor massa | 4 |
|---|---|
| nomor neutron | 2 |
| bobot atom | |
| g-factor | 0
|
| natural abundance | 99,9998 ± 0,0002
|
| peluruhan radioaktif | isotop stabil |
| Waktu paruh | Not Radioactive ☢️ |
| Spin | 0 |
| nuclear quadrupole moment | 0
|
| tanggal penemuan | 1908 |
| parity | + |
| Nomor massa | 5 |
|---|---|
| nomor neutron | 3 |
| bobot atom | |
| g-factor | |
| natural abundance | |
| peluruhan radioaktif | ☢️ radioactive element |
| Waktu paruh | 602 ± 22 ys
|
| Spin | 3/2 |
| nuclear quadrupole moment | |
| tanggal penemuan | 1937 |
| parity | - |
| modus peluruhan | intensitas |
|---|---|
| n (neutron emission) | 100% |
| Nomor massa | 6 |
|---|---|
| nomor neutron | 4 |
| bobot atom | |
| g-factor | 0
|
| natural abundance | |
| peluruhan radioaktif | ☢️ radioactive element |
| Waktu paruh | 806,92 ± 0,24 ms
|
| Spin | 0 |
| nuclear quadrupole moment | 0
|
| tanggal penemuan | 1936 |
| parity | + |
| modus peluruhan | intensitas |
|---|---|
| β− (β− decay) | 100% |
| β− d (β−-delayed deuteron emission) | 0.000278% |
| Nomor massa | 7 |
|---|---|
| nomor neutron | 5 |
| bobot atom | |
| g-factor | |
| natural abundance | |
| peluruhan radioaktif | ☢️ radioactive element |
| Waktu paruh | 2,51 ± 0,07 zs
|
| Spin | 3/2 |
| nuclear quadrupole moment | |
| tanggal penemuan | 1967 |
| parity |
| modus peluruhan | intensitas |
|---|---|
| n (neutron emission) | 100% |
| Nomor massa | 8 |
|---|---|
| nomor neutron | 6 |
| bobot atom | |
| g-factor | 0
|
| natural abundance | |
| peluruhan radioaktif | ☢️ radioactive element |
| Waktu paruh | 119,5 ± 1,5 ms
|
| Spin | 0 |
| nuclear quadrupole moment | 0
|
| tanggal penemuan | 1965 |
| parity | + |
| modus peluruhan | intensitas |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | 16% |
| β− t (β−-delayed triton emission) | 0.9% |
| Nomor massa | 9 |
|---|---|
| nomor neutron | 7 |
| bobot atom | |
| g-factor | |
| natural abundance | |
| peluruhan radioaktif | ☢️ radioactive element |
| Waktu paruh | 2,5 ± 2,3 zs
|
| Spin | 1/2 |
| nuclear quadrupole moment | 0
|
| tanggal penemuan | 1987 |
| parity |
| modus peluruhan | intensitas |
|---|---|
| n (neutron emission) | 100% |
| Nomor massa | 10 |
|---|---|
| nomor neutron | 8 |
| bobot atom | |
| g-factor | 0
|
| natural abundance | |
| peluruhan radioaktif | ☢️ radioactive element |
| Waktu paruh | 260 ± 40 ys
|
| Spin | 0 |
| nuclear quadrupole moment | 0
|
| tanggal penemuan | 1994 |
| parity | + |
| modus peluruhan | intensitas |
|---|---|
| 2n (2-neutron emission) | 100% |
| penemu atau pencipta | Sir William Ramsey, Nils Langet, P.T.Cleve |
|---|---|
| tempat penemuan | Scotland/Sweden |
| tanggal penemuan | 1895 |
| etimologi | Greek: hêlios (sun). |
| pelafalan | HEE-li-em (Inggris) |
| Kelimpahan alami | |
|---|---|
| Kelimpahan di kerak bumi | |
| natural abundance (samudra) | |
| natural abundance (tubuh manusia) | |
| natural abundance (Meteoroid) | |
| natural abundance (matahari) | 23 %
|
| Kelimpahan di alam semesta | 23 %
|
| 1 | s | 0.3125 |