Takaitaccen gabatarwa
Sunan samfur: Praseodymium
Formula: Pr
Lambar CAS: 7440-10-0
Nauyin Kwayoyin: 140.91
Yawa: 6.71 g/mL a 25 ° C
Matsakaicin narkewa: 931 ° C
Siffar: 10 x 10 x 10 mm cube
Abu: | Praseodymium |
Tsafta: | 99.9% |
Lambar atomic: | 59 |
Yawan yawa | 6.8 g.cm-3 a 20 ° C |
Wurin narkewa | 931C |
Bolling batu | 3512 ° C |
Girma | 1 inch, 10mm, 25.4mm, 50mm, ko Musamman |
Aikace-aikace | Gifts, kimiyya, nuni, tarin, ado, ilimi, bincike |
Praseodymium ƙarfe ne mai laushi mai laushi, mai launin azurfa-rawaya. Memba ne na rukunin lanthanide na tebirin abubuwa na lokaci-lokaci. Yana amsawa sannu a hankali tare da iskar oxygen: lokacin da aka fallasa shi zuwa iska yana samar da koren oxide wanda ba ya kare shi daga ƙarin iskar oxygen. Ya fi juriya ga lalata a cikin iska sauran karafa da ba kasafai ba, amma har yanzu yana bukatar a adana shi a karkashin mai ko kuma a rufe shi da filastik. Yana amsawa da sauri da ruwa.