Pr

Praseodym

Elementị 59 · 140.91 u

Lantịnụ̀ f-block Oge 6 Òtù na RT Wikipedia →

Praseodymium na-enye glaasi na enamel agba ọbara ọbara.

Nkarachọ

Atomic mass140.91 u
Mgbatị6.773 g/cm³
Mmalite1208.0 K
Nhazi3793.0 K
NhaziOji-acha ọcha metallic
Oge n'ime ụlọÒtù

Ihenhọrọ ndị ahụ

Elektrọn1.13 (Pauling)
Nhazi527.0 kJ/mol
Elektrọn93.0 kJ/mol
Oxygenation state+2, +3, +4

Ihenhọrọ nke atom

Nhazi[Xe] 4f3 6s2
Atomic Radius182.0 pm
Covalent Radius203.0 pm
Van der Waals Radius239.0 pm

Ndesịta ozi ndị ahụ

E chọpụtara site naCarl Auer von Welsbach
Ụbọchị emeredịkachọrọ1885
EbeVienna, Austria
Aha mgbe ahụGreek 'prasios didymos' pụtara ọlaedo abụọ

Báà Praseodym

Praseodymium bụ a soft, silvery, malleable metal e jidere site neodymium na 1885 site Welsbach site na ihe e chere na ọ bụ 'didymium.'

Usoroiheomume

Magnets (na neodymium), ụgbọelu engines, welder's goggles, na ceramics colorant.

Eziokwu dị ụtọ

Praseodymium e jide n'aka na afọ n'ime 'didymium' ruo mgbe ọ bụ n'ikpeazụ e jidere site neodymium na 1885.

Isotopes

Nkebi Afọ́ọ̀ltụ̀ Half-Life Òtù
141 1.0% - Ee

Nhazi

[Xe] 4f3 6s2

Tụnyere

Banye na ndị ọzọ

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