2013-11-21

[public] 171K views, 7.14K likes, 26.0 dislikes audio only

Periodic Videos

Answering viewer questions to coincide with our 500th video. More Q&A at /youtube/video/IsyQDWlszjQ - See 500th video at /youtube/video/pp2WrHc4rmI

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://www.nottingham.ac.uk/chemistry/index.aspx

Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/

A run-down of Brady's channels: http://bit.ly/bradychannels