Chemical Symbols 61-90
English
Avancé
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).
Description
Mots-clés
30
Questions
10 s
Par question
0:45
Temps moyen
3,0
Score au concours
5
Participants
Question 10: there are two times the answer Yb.