For its anniversary, the German Chemical Society (GDCh) has dug up a box of photos of chemists from their archive. Among those photographed are GDCh Presidents, Nobel Prize winners, and many other well-known chemists.

For the next 11 weeks, we will uncover one of the photographs each Monday and invite you to guess who is pictured. The answer will be published the following Friday. From all correct entries, 11 winners will be selected at random at the WiFo 2017, the largest GDCh biannual conference. You can increase your chances by participating in more than one quiz.

 

	Photo 1: Karl Waldemar Ziegler 1898 – 1973, German chemist, won 1963 Nobel Prize in Chemistry with Giulio Natta for work on polymers, known for work involving free-radicals, many-membered rings, organometallic compounds, and development of Ziegler–Natta catalyst.

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• GDCh Celebrates 150 Years