If you do not find what you're looking for, you can use more accurate words.
protactinium (Info)
protactinium:- a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead (Princeton WordNet 3.1)
protactinium:- عنصر فلزي مشع أبيض اللون، عدده الذري 91، ووزنه الذري 231.0359 اكتشفه "هان" و "مايتير" عام 1918 وكذلك اكتشفه "صودي" ومعاونوه في العام نفسه. (معجم الكيمياء والصيدلة (ج٢))
We require cookies for this site to function. Please enable them to continue.
نحن نظهر لك هذه الرسالة لأننا نحترم خصوصيتك.
By using this website, you consent to us collecting cookies to provide you with a better user experience,
more details.
You cannot browse the site since you refused the use of cookies, as the site relies primarily on them to work.