Ne
Neon is a noble gas famous for the bright reddish-orange light it emits in discharge tubes.
Physical Properties
| পদাৰ্থ | 20.18 u |
| ঘনত্ব | 0.0008999 g/cm³ |
| Melting Point | 24.56 K |
| উত্তাপৰ বিন্দু | 27.07 K |
| আকৃতি | Colorless gas, reddish-orange glow in discharge |
| State at Room Temp | Gas |
রাসায়নিক বৈশিষ্ট্যসমূহ
| 1- তম আইনাইজেশন শক্তি | 2080.7 kJ/mol |
| ইলেকট্ৰন | -116.0 kJ/mol |
| Oxidation States | 0 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [He] 2s2 2p6 |
| পৰমাণু | 38.0 pm |
| কোভালেন্ট বেৰিয়াড | 58.0 pm |
| Van der Waals Radius | 154.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | William Ramsay, Morris Travers |
| আবিষ্কাৰৰ বছৰ | 1898 |
| অৱস্থান | London, England |
| Named After | Greek 'neos' meaning new |
বিষয়ে Neon
Neon is a colorless, inert noble gas that gives a distinctive reddish-orange glow in vacuum discharge tubes. It is the fifth most abundant element in the universe but rare on Earth. Neon has no true chemical compounds and has the narrowest liquid range of any element.
Uses & Applications
Neon signs and lighting, high-voltage indicators, helium-neon lasers, and cryogenic refrigeration.
মজা কথা
Although we call all colorful gas-discharge tube signs 'neon signs,' only the red-orange ones actually contain neon; other colors use different gases.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 20 | 0.9048% | - | Yes |
| 21 | 0.0027% | - | Yes |
| 22 | 0.0925% | - | Yes |
ইলেকট্ৰন
[He] 2s2 2p6