Kr
Krypton is a noble gas used in fluorescent lamps and photographic flash equipment.
Physical Properties
| পদাৰ্থ | 83.798 u |
| ঘনত্ব | 0.003733 g/cm³ |
| Melting Point | 115.79 K |
| উত্তাপৰ বিন্দু | 119.93 K |
| আকৃতি | Colorless gas, whitish glow in discharge |
| State at Room Temp | Gas |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 3.0 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 1350.8 kJ/mol |
| ইলেকট্ৰন | -96.0 kJ/mol |
| Oxidation States | +2 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Ar] 3d10 4s2 4p6 |
| পৰমাণু | 88.0 pm |
| কোভালেন্ট বেৰিয়াড | 116.0 pm |
| Van der Waals Radius | 202.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | William Ramsay, Morris Travers |
| আবিষ্কাৰৰ বছৰ | 1898 |
| অৱস্থান | London, England |
| Named After | Greek 'kryptos' meaning hidden |
বিষয়ে Krypton
Krypton is a colorless, odorless, tasteless noble gas in trace amounts in the atmosphere. From 1960 to 1983, the meter was defined by krypton-86 emission. Krypton can form compounds with fluorine.
Uses & Applications
Fluorescent lamps, flash photography, insulating windows, and formerly used to define the standard meter.
মজা কথা
Despite its name, krypton has nothing to do with Superman -- it was named from Greek for 'hidden' in 1898, decades before the comic character.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 82 | 0.11593% | - | Yes |
| 83 | 0.115% | - | Yes |
| 84 | 0.56987% | - | Yes |
| 86 | 0.17279% | - | Yes |
ইলেকট্ৰন
[Ar] 3d10 4s2 4p6