Question

Protactinium has 516 years of half life how many decays will it go through to become 1/64th of the substance? ,

Answer 1

• 6 decays

Step-by-step explanation:

Each half life period reduced the amount of substance by half

• 64 = 2⁶
• 1/64 = (1/2)⁶

So 6 of half life cycles or decays will go.