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ایتریم

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ایتریم

ایتریم( Yttrium )
نام: ایتریم
نماد:Y
عدد اتمی:39
عدد جرمی:88
جرم اتمی:88.905 gr/mol
آرایش الکترونی: 5s²4d¹[Kr]
چگالی:4.47 gr/cm³
دمای ذوب:°1522 سلسیوس
دمای جوش:°3338 سلسیوس
ایتریوم عنصری فلزی به رنگ زرد مایل به قهوه ای کمرنگ با عدد اتمی ۳۹ و معادل انگلیسی Yttrium برگرفته از شهر محل کشف یعنی ایتربی در سوئد.
ایتریوم عنصری است فلزی با در گروه 3 و تناوب پنجم جدول تناوبی جای دارد. جرم اتمی ۸۸٫۹۵۰۹؛ ظرفیت ۳، دارای ایزتوپ پایدار نیست.
احتیاط
کمی خورنده است و در حالت پودر قابل اشتعال است.
کاربرد:
برای درمان سرطان در دارو های شیمی درمانی استفاده می شود.
همچنین برای شتاب دهنده ی نور لیزر در لیزر های جنگی استفاده می شود.
خواص
فلز خاکستری تیره؛ جرم حجمی ۴٫۴۷؛ نقطه ذوب ۱۵۰۰؛ نقطه جوش ۲۹۲۷ در اسیدهای رقیق و محلول هیدروکسید پتاسیم محلول است؛ آب را تجزیه می‌کند؛ فقط ترکیب‌های سه ظرفیتی آن شناخته شده است.
عکسهای عنصر

امیرمحمدمحمدحسینی
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‏143 دیدگاه در نوشته‌ی “ایتریم

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