Rg
Roentgenium
উপাদান 111 · 282.169 u
অজ্ঞাত বৈশিষ্ট্যসমূহ
d-ব্লক
Period 7
দল 11
Unknown at RT
Radioactive
t½ 100 seconds
Synthetic
Wikipedia →
Roentgenium may be the most electronegative metal due to relativistic effects.
Physical Properties
| পদাৰ্থ | 282.169 u |
| ঘনত্ব | 28.7 g/cm³ |
| আকৃতি | Metallic (predicted) |
| State at Room Temp | Unknown |
রাসায়নিক বৈশিষ্ট্যসমূহ
| Oxidation States | +1, +3, +5 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Rn] 5f14 6d9 7s2 |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Peter Armbruster, Gottfried Munzenberg and others |
| আবিষ্কাৰৰ বছৰ | 1994 |
| অৱস্থান | Darmstadt, Germany |
| Named After | Named after Wilhelm Conrad Rontgen, discoverer of X-rays |
বিষয়ে Roentgenium
Roentgenium is a synthetic, extremely radioactive element expected to be similar to gold. Relativistic effects significantly influence its predicted properties.
Uses & Applications
No practical applications. Scientific research only.
মজা কথা
Roentgenium is predicted to be the most electronegative metal due to relativistic effects on its electron orbitals.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 280 | - | 3.6 seconds | No |
| 282 | - | 100 seconds | No |
ইলেকট্ৰন
[Rn] 5f14 6d9 7s2