science & technology Online Quiz - 159
Casual Mode - Take your time!
1 / 19
Correct
0
Incorrect
0
Score
0%
Multiple Choice
Element with atomic number 41 has 2 names, what are they?
- Niobium, Columbium
- Lutetium, Luthenium
- Neodymium, Prasedeomium
- Zinc, Zirconium