Chemical Symbols 61-90
English
Продвинутый
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).
Описание
30
Вопросов
10 сек
На вопрос
0:45
Среднее время
3,0
Результат в конкурсе
5
Прошли тест
Question 10: there are two times the answer Yb.