Pekka Pyykkö

Veli Pekka Pyykkö (born 12 October 1941)[1] is a Finnish academic.

[1] From 2009–2012, he was the chairman of the International Academy of Quantum Molecular Science.

He is known for his extension to the periodic table of elements,[2][3] known as the Pyykkö model.

[5] After the 118 elements now known, Pekka Pyykkö predicts that the orbital shells will fill up in this order: He also suggests that period 8 be split into three parts: The compact version:[6] Pekka Pyykkö correctly predicted the existence of chemical bonds between gold and the noble gas xenon, which is usually inert; this bond is known to occur in the cationic complex tetraxenonogold(II) (AuXe2+4).

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