What is the atomic number of Europium?
63
11
500
125
Correct answer is A
No explanation has been provided for this answer.
What is the atomic number of Samarium?
390
62
101
500
Correct answer is B
No explanation has been provided for this answer.
What is the atomic number of Promethium?
43
55
57
61
Correct answer is D
No explanation has been provided for this answer.
What is the atomic number of Neodymium?
30
60
90
120
Correct answer is B
No explanation has been provided for this answer.
What is the atomic number of Praseodymium?
200
150
59
97
Correct answer is C
No explanation has been provided for this answer.