Protactinium - Periodic Table of Videos

2014-09-14

[public] 378K views, 6.05K likes, 33.0 dislikes audio only

Here's a new video about Protactinium, number 91 on the periodic table!

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Isotope 238 has half life 6.8 hrs

Isotope 238m has half life 1.17 mins

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