Se
Selenium is an essential trace element used in electronics and dietary supplements.
የፊዚክስ ባህሪያት
| አቶሚክ | 78.971 u |
| ብዛት | 4.809 g/cm³ |
| የቀለም አማራጭ | 494.0 K |
| የሙቀት መጠኑ፦ | 958.0 K |
| ቅርጽ | Red to gray, black in vitreous form |
| የክፍሉ ወቅት | ቀጥ ያለ |
የኬሚካል ባህሪያት
| ሴኮንዶች | 2.55 (ፒየር) |
| ፊደል ሠሌዳው፦ | 941.0 kJ/mol |
| ፊደል ሠሌዳው፦ | 195.0 kJ/mol |
| መተላለፊያ | -2, +2, +4, +6 |
የፊደል ቅርጽ ምርጫዎች
| የኤሌክትሮን ማስተካከያ | [Ar] 3d10 4s2 4p4 |
| አቶሚክ | 103.0 pm |
| ሬዲየስ | 120.0 pm |
| ቫን ዴር ዋልስ | 190.0 pm |
መከፈት
| የተገኘው በ | Jons Jacob Berzelius |
| የምርምር ዓመት | 1817 |
| ቦታ | Stockholm, Sweden |
| ስም፦ (_N) | Greek 'selene' meaning moon |
ስለ Selenium
Selenium has properties between sulfur and tellurium. Its conductivity changes with light, making it useful in photoconductors. It is an essential trace element as a component of selenocysteine.
ፕሮግራሞች
Photovoltaic cells, photocopiers, glass manufacturing, dietary supplements, and semiconductors.
ሐቅ
Selenium is essential in tiny amounts but toxic in larger doses. Brazil nuts are the richest known dietary source.
ሴኮንዶች
| ብዛት | ብዛት | አራተኛ | ቋሚ |
| 76 | 0.0937% | - | አዎ |
| 78 | 0.2377% | - | አዎ |
| 80 | 0.4961% | - | አዎ |
| 82 | 0.0873% | - | አዎ |
የኤሌክትሮን ማስተካከያ
[Ar] 3d10 4s2 4p4