What is the atomic number of Strontium?
38
39
40
41
Correct answer is A
No explanation has been provided for this answer.
What is the atomic number of Rubidium?
11.7
14
37
45.5
Correct answer is C
No explanation has been provided for this answer.
What is the atomic number of Krypton?
77
89
36
4
Correct answer is C
No explanation has been provided for this answer.
What is the atomic number of Bromine?
27
30
35
38
Correct answer is C
No explanation has been provided for this answer.
What is the atomic number of Selenium?
12
16
24
34
Correct answer is D
No explanation has been provided for this answer.