Ts
Tennessine
العنصر 117 · 294.211 u
خصائص غير معروفة
قطاع p
Period 7
المجموعة 17
Unknown at RT
Radioactive
t½ 51 milliseconds
Synthetic
Wikipedia →
Tennessine is the second-heaviest known halogen and one of the most recently confirmed elements.
Physical Properties
| الكتلة الذرية | 294.211 u |
| الكثافة | 7.2 g/cm³ |
| Melting Point | 723.0 K |
| نقطة الغليان | 883.0 K |
| المظهر | Metallic (predicted) |
| State at Room Temp | Unknown |
الخواص الكيميائية
| Oxidation States | +1, +3, +5 |
الخصائص الذرية
| تشكيل الإلكترون | [Rn] 5f14 6d10 7s2 7p5 |
اكتشاف
| اكتشفها | Joint Institute for Nuclear Research / Oak Ridge National Laboratory |
| سنة الاكتشاف | 2010 |
| الموقع | Dubna, Russia |
| Named After | Named after Tennessee, USA |
عن Tennessine
Tennessine was produced by bombarding berkelium-249 with calcium-48 ions. The berkelium target took 250 days to produce at Oak Ridge. Only about 15 atoms have been detected.
Uses & Applications
No practical applications. Scientific research only.
حقيقة مضحكة
Creating tennessine required producing berkelium over 250 days at Oak Ridge, then shipping it to Russia -- a remarkable collaboration.
النظائر
| Mass Number | الوفرة | نصف العمر | Stable |
| 293 | - | 22 milliseconds | No |
| 294 | - | 51 milliseconds | No |
تشكيل الإلكترون
[Rn] 5f14 6d10 7s2 7p5