Mt
Meitnerium
العنصر 109 · 277.154 u
خصائص غير معروفة
قطاع د
Period 7
المجموعة 9
Solid at RT
Radioactive
t½ 7.6 seconds
Synthetic
Wikipedia →
Meitnerium is named after Lise Meitner, who co-discovered nuclear fission.
Physical Properties
| الكتلة الذرية | 277.154 u |
| الكثافة | 37.4 g/cm³ |
| المظهر | Metallic (predicted) |
| State at Room Temp | Solid |
الخواص الكيميائية
| Oxidation States | +1, +3, +6, +9 |
الخصائص الذرية
| تشكيل الإلكترون | [Rn] 5f14 6d7 7s2 |
اكتشاف
| اكتشفها | Peter Armbruster, Gottfried Munzenberg and others |
| سنة الاكتشاف | 1982 |
| الموقع | Darmstadt, Germany |
| Named After | Named after Lise Meitner, co-discoverer of nuclear fission |
عن Meitnerium
Meitnerium is a synthetic, extremely radioactive element expected to be similar to iridium. Only a few atoms have ever been produced.
Uses & Applications
No practical applications. Scientific research only.
حقيقة مضحكة
Lise Meitner was overlooked for the Nobel Prize despite co-discovering nuclear fission -- one of the most notable snubs in Nobel history.
النظائر
| Mass Number | الوفرة | نصف العمر | Stable |
| 276 | - | 0.72 seconds | No |
| 278 | - | 7.6 seconds | No |
تشكيل الإلكترون
[Rn] 5f14 6d7 7s2