Sm

Samarium

Elementị 62 · 150.36 u

Lantịnụ̀ f-block Oge 6 Òtù na RT Wikipedia →

Samarium na-eji na ike magnets na ọgwụgwọ cancer.

Nkarachọ

Atomic mass150.36 u
Mgbatị7.52 g/cm³
Mmalite1345.0 K
Nhazi2067.0 K
NhaziSilvery-white metallic
Oge n'ime ụlọÒtù

Ihenhọrọ ndị ahụ

Elektrọn1.17 (Pauling)
Nhazi544.5 kJ/mol
Elektrọn15.6 kJ/mol
Oxygenation state+2, +3

Ihenhọrọ nke atom

Nhazi[Xe] 4f6 6s2
Atomic Radius180.0 pm
Covalent Radius198.0 pm
Van der Waals Radius229.0 pm

Ndesịta ozi ndị ahụ

E chọpụtara site naLecoq de Boisbaudran
Ụbọchị emeredịkachọrọ1879
EbeParis, France
Aha mgbe ahụA kpọrọ ya site na mineral samarskite, site na onyeisi Russian Vasili Samarsky-Bykhovets

Báà Samarium

Samarium bụ metal na-acha ọbara ọbara nke na-akpụzi n'ime ikuku. Samarium-cobalt magnets bụ magnets mbụ nke ala dị n'ime ala na-adị mkpa maka usoroiheomume okpomọkụ dị elu.

Usoroiheomume

Samarium-cobalt magnets, ọgwụgwọ ọrịa kansa (samarium-153), nuclear reactor control rods, na catalysts.

Eziokwu dị ụtọ

Samarium-cobalt magnets na-arụ ọrụ ruo 700 degrees C, dị nnọọ karịa neodymium magnets, na-eme ka ha dị mkpa maka jet engines.

Isotopes

Nkebi Afọ́ọ̀ltụ̀ Half-Life Òtù
147 0.1499% 1.06e11 years Ọ bụghị
149 0.1382% - Ee
150 0.0738% - Ee
152 0.2675% - Ee

Nhazi

[Xe] 4f6 6s2

Tụnyere

Banye na ndị ọzọ

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