Fm
Fermium
উপাদান 100 · 257.09511 u
Fermium is the heaviest element that can be produced by neutron capture.
Physical Properties
| পদাৰ্থ | 257.09511 u |
| ঘনত্ব | 9.7 g/cm³ |
| Melting Point | 1800.0 K |
| আকৃতি | Silvery metallic (predicted) |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 1.3 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 627.0 kJ/mol |
| ইলেকট্ৰন | 33.96 kJ/mol |
| Oxidation States | +2, +3 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Rn] 5f12 7s2 |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Albert Ghiorso and others |
| আবিষ্কাৰৰ বছৰ | 1952 |
| অৱস্থান | Berkeley, California, USA |
| Named After | Named after Enrico Fermi, pioneer of nuclear reactors |
বিষয়ে Fermium
Fermium was co-discovered with einsteinium in hydrogen bomb debris. It is the heaviest element producible by neutron bombardment. Only tiny amounts have been made.
Uses & Applications
No practical applications. Scientific research only.
মজা কথা
Fermium is the heaviest element producible by neutron bombardment. Anything heavier requires smashing nuclei together in accelerators.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 255 | - | 20.07 hours | No |
| 257 | - | 100.5 days | No |
ইলেকট্ৰন
[Rn] 5f12 7s2