Professor Sir Martyn Poliakoff answers some viewer questions. See more here: https://bit.ly/ProfQandA More links and info in full description ↓↓↓ Amazon links Primo Levi, The Periodic Table: https://amzn.to/2vqcsTG Owen Matthews, Black Sun: https://amzn.to/2VETCTp Stephen Poliakoff box set: https://amzn.to/38gy0z9 The Professor's chromium trioxide failure and alarm: https://youtu.be/_HvYJQ5Bofk The Prof's school visit: https://youtu.be/M8YzIa6Amuc Support us on Patreon: https://www.patreon.com/periodicvideos More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/ Brady's Blog: http://www.bradyharanblog.com Join Brady's mailing list for updates and extra stuff --- http://eepurl.com/YdjL9