Answer:
Stopwatch
Stopwatch is a time measuring tool.
Hi. Your question is quite ambiguous. If the list here follows the periodic table, then I think you are asking for elements 31 to 35. Element 30 is Zinc. This is followed by Gallium (Ga), Germanium (Ge), Arsenic (As), Selenium (Se) and Bromine (Br).
The answer to you question is 3
238.02891
hope this helps :)
