(I think) you would have to divided the number i dont know the exact answer but ya hope this help
Answer:
I hope you understand please follow me please
Decay is a type of degradation reaction and thus is considered a first order reaction. thus the formula goes like this.
rate constant= 0.693/half life
so here...
rate constant= 0.693/1620 year^-1
Add proton + neutrons = Mass 37
Proton is same as your atomic mass= 17
If you go on the periodic table look up 17 and it will give u the letter.
Answer:
B. as a food preservative in the manufacture of detergents
.........
