What is the atomic number of Technetium?
11
43
87
120
Correct answer is B
No explanation has been provided for this answer.
What is the atomic number of Molybdenum?
17
22
30
42
Correct answer is D
No explanation has been provided for this answer.
What is the atomic number of Niobium?
18
23
41
64
Correct answer is C
No explanation has been provided for this answer.
What is the atomic number of Zirconium?
37
38
39
40
Correct answer is D
No explanation has been provided for this answer.
What is the atomic number of Yttrium?
23
29
33
39
Correct answer is D
No explanation has been provided for this answer.