Element 71 in our International Year of the Periodic Table series is lutetium. Lutetium can be used to determine the age of meteorites and is also used as a catalyst and in some cancer treatments.
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Element 70 in our International Year of the Periodic Table series is ytterbium. Ytterbium is found in the most accurate atomic clocks and is also used in studies of the brain.
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Element 69 in our International Year of the Periodic Table series is thulium. A rare element, thulium is used in portable X-ray machines and also in some banknotes.
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Element 68 in our International Year of the Periodic Table series is erbium. Erbium is used to make pink-tinted glass, in optical fibres, and in some types of dental surgery.
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Element 67 in our International Year of the Periodic Table series is holmium. Holmium is used in powerful magnets, in laser surgery, and have also been used for atomic data storage.
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Element 66 in our International Year of the Periodic Table series is dysprosium. Dysprosium and its compounds are used in some computer hard drives, radiation dosimeters, and motors and generators for electric cars and wind turbines.
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