No. What you did was Google Technetium "shelf life" and posted links to the first two hits. Fortunately for you, the second one was an authoritative WHO dit. Unfortunately for you, the first didn't even include the word "shelf" anywhere in the text, and the four mentions of "life" were preceded by "half". Unfortunatelier for you, you can't go back and edit that link out as @dogmeat quoted you minutes later. You also didn't RML&ID any of the dits you linked, else you would have a better understanding of the subject.Wrong? I posted an article explaining the half life of the isotope.
Science isn't opinion.
That's the problem with people who were brought up on participation trophies.