Bohr Diagram Ofkrypton

Today, thanks to talented CIRI I discovered something new and very very cute .. the PIF !
a blog candy that lasts a year ..

is very simple, it works ..

.. the first 3 comments on this post will receive a little surprise made with my hands, only one rule: the relaunch PIF on your blog!

to me it looks like a great idea! and then .. n the luck to all!