Ir
Iridium is the most corrosion-resistant metal and provided key evidence for the dinosaur extinction.
የፊዚክስ ባህሪያት
| አቶሚክ | 192.22 u |
| ብዛት | 22.56 g/cm³ |
| የቀለም አማራጭ | 2719.0 K |
| የሙቀት መጠኑ፦ | 4701.0 K |
| ቅርጽ | Silvery-white metallic |
| የክፍሉ ወቅት | ቀጥ ያለ |
የኬሚካል ባህሪያት
| ሴኮንዶች | 2.2 (ፒየር) |
| ፊደል ሠሌዳው፦ | 880.0 kJ/mol |
| ፊደል ሠሌዳው፦ | 150.94 kJ/mol |
| መተላለፊያ | +1, +2, +3, +4, +5, +6 |
የፊደል ቅርጽ ምርጫዎች
| የኤሌክትሮን ማስተካከያ | [Xe] 4f14 5d7 6s2 |
| አቶሚክ | 136.0 pm |
| ሬዲየስ | 141.0 pm |
| ቫን ዴር ዋልስ | 202.0 pm |
መከፈት
| የተገኘው በ | Smithson Tennant |
| የምርምር ዓመት | 1803 |
| ቦታ | London, England |
| ስም፦ (_N) | Latin 'iris' meaning rainbow, for its colorful salts |
ስለ Iridium
Iridium is a very hard, brittle, silvery-white metal resistant to all acids and molten metals. An iridium-rich layer in geological strata worldwide proved the asteroid impact that caused dinosaur extinction.
ፕሮግራሞች
Spark plugs, crucibles for crystal growth, and deep-sea drilling pipe.
ሐቅ
A thin layer of iridium in 66-million-year-old rock worldwide proved an asteroid caused the dinosaur extinction.
ሴኮንዶች
| ብዛት | ብዛት | አራተኛ | ቋሚ |
| 191 | 0.373% | - | አዎ |
| 193 | 0.627% | - | አዎ |
የኤሌክትሮን ማስተካከያ
[Xe] 4f14 5d7 6s2