My friend gave me something made of cobalt 60 and I keep it in my pocket is it harmful ?

Answer 1

Cobalt 60 is a radioactive isotope. You will have to ask your friend how long ago this was made because Cobalt 60 has a radio active decay of 5.27 years. To get the exact definion go to the Wikepedia dicionary website and tipe in Cobalt 60

Answer 2

Since you posted the question 10 minutes ago, and I'm assuming you put the Cobalt-60 in your pocket right before you asked, we can approximate your time of death as being 5-8 minutes ago.