The noble gases (Group 0) were not discovered until the late 19th century, long after many other elements had been isolated.
State one chemical property of the noble gases that made them extremely difficult for early chemists to detect.
44 exam-style questions on Edexcel GCSE Chemistry 7.3 Group 0, covering 7.3.1 The noble gases. Each one has a worked solution and a mark scheme showing where the marks go.