Symbol | Ra |
---|---|
Atomic Number | 88 |
Atomic Weight | (226) |
Group |
2 (alkaline earth metals or beryllium family)
IIA (IUPAC), IIA (CAS)
Solid, Conductor, Alkaline Earth Metal, Metal, Radioactive, Natural
|
Period | 7 |
Block | s |
Density | 5.0 g/cm3 |
---|---|
Atomic Volume | 45.2 cm3/mole |
Atomic Radius | 2.33 angstroms |
Covalent Radius | -- |
Crust Abundance | 9.9E-12% |
Crystal Structure | Cubic: Body centered |
Color | Silver |
Melting Point | 700.0 °C |
---|---|
Boiling Point | 1140.0 °C |
Heat of Fusion | 8.37 kJ/mol |
Heat of Vaporization | 136.82 kJ/mol |
Electronegativity | 0.9 (Pauling Scale) |
---|---|
Electron Affinity | -- |
1st Ionization Energy | 509 kJ/mol |
2. Ionization Energy | 979.0 kJ/mol |
Specific Heat Capacity | 0.094 J g−1 K−1 |
Thermal Conductivity | 18.6 W·m−1·K−1 |
Oxidation States | 2 |
---|---|
Electrons Per Shell | 2 8 18 32 18 8 2 |
Electron Configuration | [Rn] 7s2 |
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 7s2 | |
Orbital Diagram
1s ↿⇂ 2s ↿⇂ 2p ↿⇂ ↿⇂ ↿⇂ 3s ↿⇂ 3p ↿⇂ ↿⇂ ↿⇂ 3d ↿⇂ ↿⇂ ↿⇂ ↿⇂ ↿⇂ 4s ↿⇂ 4p ↿⇂ ↿⇂ ↿⇂ 4d ↿⇂ ↿⇂ ↿⇂ ↿⇂ ↿⇂ 4f ↿⇂ ↿⇂ ↿⇂ ↿⇂ ↿⇂ ↿⇂ ↿⇂ 5s ↿⇂ 5p ↿⇂ ↿⇂ ↿⇂ 5d ↿⇂ ↿⇂ ↿⇂ ↿⇂ ↿⇂ 5f 6s ↿⇂ 6p ↿⇂ ↿⇂ ↿⇂ 6d 6f 7s ↿⇂ 7p 7d 7f |
Radioactive | Yes |
---|---|
Half Life | 1.59×103 |
Lifetime | 2.31×103y |
Decay | Alpha Emission |
Afrikaans | Radium | |
Aragonese | Radio | |
العربية | راديوم | |
Armãneashte | Radiumu | |
asturianu | Radiu | |
azərbaycan dili | Radium | |
български | Радий | |
বাংলা | রেডিয়াম | |
brezhoneg | Radiom | |
bosanski | Radij[um] | |
Byelorussian | Радый | |
Cebuano | Radyo | |
čeština | Radium | |
Chuvash | Ради | |
Cymraeg | Radi | |
dansk | Radium | |
Deutsch | Radium | |
Ελληνικά | Ραδιο | |
English | Radium | |
esperanto | Radiumo | |
español | Radio | |
eesti | Raadium | |
euskara | Radioa | |
فارسی | رادیم | |
suomi | Radium | |
føroyskt | Radium | |
français | Radium | |
furlan | Radi | |
West-Frysk | Radium | |
Gaeilge | Raidiam | |
Gàidhlig | Raidiam | |
galego | Radio | |
ગુજરાતી | રેડિયમનો | |
Gaelg | Raadjum | |
Hakka Chinese | Luì (鐳) | |
עברית | רדיום | |
हिन्दी | रेडियम | |
hrvatski | Radij | |
magyar | Rádium | |
հայերեն | Ռադիում | |
Indonesia | Radium | |
íslenska | Radín | |
italiano | Radio | |
日本語 | ラジウム | |
ქართული | რადიუმი | |
کٲشُر | Rôd | |
қазақ тілі | Радий | |
한국어 | 라듐 | |
Kurdish | Radyûm | |
Komi | Радий | |
kernewek | Radyum | |
кыргызча | Радий | |
Latin | Radium | |
Lëtzebuergesch | Radium | |
Lombard | Ràdi | |
lingála | Ladu | |
lietuvių | Radis | |
latviešu | Rādijs | |
Mari | Радий | |
Maori | Konuruke | |
македонски | Радиум | |
മലയാളം | റേഡിയം | |
монгол | Ради | |
Мокшан | Ради | |
Bahasa Melayu | Radium | |
Malti | Radju[m] | |
Nahuatl | Radio | |
Nederlands | Radium | |
norsk | Radium | |
Occitan | Radi | |
ирон | Радий | |
polski | Rad | |
português | Rádio | |
Runasimi | Radyu q'illay | |
română | Radiu | |
русский | Радий | |
slovenčina | Radium | |
slovenščina | Radij | |
Samoan | Radimi | |
Samogitian | Radis | |
shqip | Radium | |
српски | Радијум | |
Southern Sotho | Radiamo | |
svenska | Radium | |
Kiswahili | Radi | |
தமிழ் | ரேடியம் | |
Tajik | Радий | |
ไทย | เรเดียม | |
Türkçe | Radyum | |
ئۇيغۇرچە | رادىي | |
українська | Радій | |
o‘zbek | Radiy | |
Tiếng Việt | Rađi | |
Võro | Raadium | |
中文 | 鐳 |