La
Lanthanum is the namesake of the lanthanide series, used in camera lenses and catalysts.
የፊዚክስ ባህሪያት
| አቶሚክ | 138.91 u |
| ብዛት | 6.145 g/cm³ |
| የቀለም አማራጭ | 1193.0 K |
| የሙቀት መጠኑ፦ | 3737.0 K |
| ቅርጽ | Silvery-white metallic |
| የክፍሉ ወቅት | ቀጥ ያለ |
የኬሚካል ባህሪያት
| ሴኮንዶች | 1.1 (ፒየር) |
| ፊደል ሠሌዳው፦ | 538.1 kJ/mol |
| ፊደል ሠሌዳው፦ | 53.0 kJ/mol |
| መተላለፊያ | +2, +3 |
የፊደል ቅርጽ ምርጫዎች
| የኤሌክትሮን ማስተካከያ | [Xe] 5d1 6s2 |
| አቶሚክ | 187.0 pm |
| ሬዲየስ | 207.0 pm |
| ቫን ዴር ዋልስ | 240.0 pm |
መከፈት
| የተገኘው በ | Carl Gustaf Mosander |
| የምርምር ዓመት | 1839 |
| ቦታ | Stockholm, Sweden |
| ስም፦ (_N) | Greek 'lanthanein' meaning to lie hidden |
ስለ Lanthanum
Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly. It is found in rare earth minerals like monazite and bastnaesite. It has no biological role.
ፕሮግራሞች
Camera and telescope lenses, catalytic cracking in petroleum, battery electrodes, and lighter flints.
ሐቅ
Lanthanum was 'hidden' inside cerium oxide for 36 years before separation -- fitting since its name means 'to lie hidden'.
ሴኮንዶች
| ብዛት | ብዛት | አራተኛ | ቋሚ |
| 138 | 0.0009% | - | አዎ |
| 139 | 0.9991% | - | አዎ |
የኤሌክትሮን ማስተካከያ
[Xe] 5d1 6s2