The half-life of iodine-131 is 8 days. How many milligrams of iodine-131 remain after 24 days if the original amount was 4.00 mg?
A. 0.444 mg
B. 0.667 mg
C. 0.500 mg
D. 1.33 mg

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.

The sum of the oxidation numbers in a neutral compound is always

Why protons do not repal in the nucleus