Woman in the late 1980s were terrified about possible misuse of the new Roentgen x rays. What use do you think they envisioned?

After production, a 300ul solution with a specific activity of 30 GBq / ml was torn. Delivery timeis 3 days. The half-life of the isotope is 10 days. Find the amount of solution that needs to besent so that the customer has 2GBq at the date of delivery

Can you please help with the following question? Thanks!

Explain how an α particle can have a larger range in air than a β particle with the same energy in lead.