Sr

Strontium

Elementị 38 · 87.62 u

Akwụkwọ s-block Oge 5 Ụlọọrụ 2 Òtù na RT Wikipedia →

Strontium bụ a maara maka na-emepụta ọkụ na-acha anụnụ anụnụ na fireworks na flares.

Nkarachọ

Atomic mass87.62 u
Mgbatị2.64 g/cm³
Mmalite1050.0 K
Nhazi1655.0 K
NhaziSilvery-white yellowish metallic
Oge n'ime ụlọÒtù

Ihenhọrọ ndị ahụ

Elektrọn0.95 (Pauling)
Nhazi549.5 kJ/mol
Elektrọn5.03 kJ/mol
Oxygenation state+1, +2

Ihenhọrọ nke atom

Nhazi[Kr] 5s2
Atomic Radius215.0 pm
Covalent Radius195.0 pm
Van der Waals Radius249.0 pm

Ndesịta ozi ndị ahụ

E chọpụtara site naAdair Crawford
Ụbọchị emeredịkachọrọ1790
EbeEdinburgh
Aha mgbe ahụStrontian, obodo na Scotland

Báà Strontium

Strontium bụ metal dị nro, nke na-acha ọbara ọbara nke na-atụgharị ọbara ọbara n'ime ikuku. Ọrụ ya na-agbanye ọbara ọbara. Radioactive isotope strontium-90 bụ ihe na-emerụ ahụ nke nucleic fallout.

Usoroiheomume

Fireworks na flares (acha ọbara ọbara), ferrite magnets, CRT glass, toothpaste maka nsị nakwa ọgwụgwọ cancer.

Eziokwu dị ụtọ

Strontium-90 bụ otu n’ime ihe ndị kasị njọ nke nucleic fallout components n’ihi na ọ na-egosipụta calcium ma na-ewepụ ya n’ime anụ ahụ.

Isotopes

Nkebi Afọ́ọ̀ltụ̀ Half-Life Òtù
84 0.0056% - Ee
86 0.0986% - Ee
87 0.07% - Ee
88 0.8258% - Ee

Nhazi

[Kr] 5s2

Tụnyere

Banye na ndị ọzọ

Mepee tulọ ntụgharị
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