Chemical Symbols 61-90
English
متقدم
Signs and symbols of the 61st to 90th chemical elements of the periodic table. "Chemical symbol," Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/w/index.php?title=Chemical_symbol&oldid=953572147 (accessed May 14, 2020).
الوصف
الوسوم
30
سؤالًا
10 ث
للسؤال
0:41
متوسط الزمن
3٫0
نتيجة المسابقة
4
مشاركين
Question 10: there are two times the answer Yb.