Donald Duck voices and floating balloons. Helium is element number 2 on the periodic table. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Holmium, element number 67, is the king of magnetism. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

You may well be watching this video through a thin layer of Indium. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Make sure you have Iodine in your diet, or you may get "Derbyshire Neck". This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Iridium is element number 77 on the periodic table. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Iron and thermite. We have uploaded this video again higher resolution because the previous version was quite low quality. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Krypton is element number 36. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Lanthanum is the first of the rare earth minerals. Hear a mnemonics used by chemists to remember the order of the lanthanide series. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Lawrencium was another of the topics discussed on The Professor's recent London Road Trip. This video is one of the 103 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Special submarines and heavy-duty glass - find out all about element number 82. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Reactive lithium is the lightest of the alkali metals. This is our original lithium video from 2008 but now at higher viewing quality. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Lutetium is element number 71 and has the chemical symbol Lu. But did you know it was named after a very famous capital city? This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

We've made a new video about magnesium, the first "useful" metal on the periodic table. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Manganese is element number 25. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

We've made a new video about element 109, which was created in Darmstadt, Germany. The Professor also gets a chance to put forward his suggested name for an as-yet unnamed element. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Mendelevium is element number 101. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

The liquid metal Mercury is element number 80. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Molybdenum is element number 42 and it plays a crucial role in biology. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Neodymium is element number 60. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.

Neon, an inert gas, is element number 10. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.