Sr

Strontium

ፋይል (_F) 38 · 87.62 u

Alkaline Earth Metal ሴኮንዶች ጊዜ 5 ቡድን 2 ቀጥ ያለ በ RT ዊኪፔዲያ →

Strontium is known for producing bright red colors in fireworks and flares.

የፊዚክስ ባህሪያት

አቶሚክ87.62 u
ብዛት2.64 g/cm³
የቀለም አማራጭ1050.0 K
የሙቀት መጠኑ፦1655.0 K
ቅርጽSilvery-white yellowish metallic
የክፍሉ ወቅትቀጥ ያለ

የኬሚካል ባህሪያት

ሴኮንዶች0.95 (ፒየር)
ፊደል ሠሌዳው፦549.5 kJ/mol
ፊደል ሠሌዳው፦5.03 kJ/mol
መተላለፊያ+1, +2

የፊደል ቅርጽ ምርጫዎች

የኤሌክትሮን ማስተካከያ[Kr] 5s2
አቶሚክ215.0 pm
ሬዲየስ195.0 pm
ቫን ዴር ዋልስ249.0 pm

መከፈት

የተገኘው በAdair Crawford
የምርምር ዓመት1790
ቦታEdinburgh, Scotland
ስም፦ (_N)Strontian, a village in Scotland

ስለ Strontium

Strontium is a soft, silvery-white metal that turns yellow in air. Its compounds burn crimson. The radioactive isotope strontium-90 is a dangerous component of nuclear fallout.

ፕሮግራሞች

Fireworks and flares (red color), ferrite magnets, CRT glass, toothpaste for sensitive teeth, and bone cancer treatment.

ሐቅ

Strontium-90 is one of the most dangerous nuclear fallout components because it mimics calcium and is absorbed into bones.

ሴኮንዶች

ብዛት ብዛት አራተኛ ቋሚ
84 0.0056% - አዎ
86 0.0986% - አዎ
87 0.07% - አዎ
88 0.8258% - አዎ

የኤሌክትሮን ማስተካከያ

[Kr] 5s2

ተመሳሳይ

ከሌሎች ዕቃዎች ጋር አወዳድሩ

የቀን መቁጠሪያውን መክፈት
← Rubidium ወደ ቀጠሮ ተመልሷል Yttrium →