الرئيسية » أرشيف الوسم : actinoid

أرشيف الوسم : actinoid

actinoid

actinoid or actinide any member of the series of 15 metallic elements with proton numbers 89 (actinium) to 103 (lawrencium) inclusive that occur together in group 3 and period 7 of the IUPAC periodic table; sometimes the term is restricted to the 14 elements following actinium. Actinoid is now the …

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