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The Elements of the Periodic Table Numbers 56 - 109

Across
This element is colourless and odorless and is commonly used in rat poisons and insecticides. Its symbol is Tl and its atomic number is 81.
This element is used in the manufacture of alloys used to make cigarette lighters. Its symbol is Ce and its atomic number is 58.
There are no uses for this element outside of scientific research. Its symbol is Fr and its atomic number is 87.
This element is used with platinum as catalysts in the production of lead-free, high-octane gasoline. Its symbol is Re and its atomic number is 75.
This element is used for cancer therapy. Its symbol is Rn and its atomic number is 86.
This element is used in a variety of alloys to add high strength, ductility and a high melting point. Its symbol is Ta and its atomic number is 73.
This element is used as a fuel in nuclear power plants. Its symbol is Pu and its atomic number is 94.
This element is used as red or yellow colouring for glass and cubic zirconia. Its symbol is Ho and its atomic number is 67.
This element is currently only used in research. Its symbol is Rf and its atomic number is 104.
This element is magnetic and is used to make a permanent magnet. Its symbol is Nd and its atomic number is 60.
This element is used to coat filaments in electronic devices, such as television sets. Its symbol is Th and its atomic number is 90.
This element is quite valuable and is commonly used in coins, jewellery and many high-end luxuries. Its symbol is Au and its atomic number is 79.
This element is used in drilling fluids for oil and gas wells, as well as in paint and glassmaking. Its symbol is Ba and its atomic number is 56.
This element is used to produce a radioactive gas used to treat some types of cancer. Its symbol is Ra and its atomic number is 88.
Compounds of this element are used as green phosphors in colour television picture tubes. Its symbol is Gd and its atomic number is 64.
This element is a popular choice metal for making wedding rings. its symbol is W and its atomic number is 74.
This element is used in smoke detectors. Its symbol is Am and its atomic number is 95.
This element generates the heat in nuclear power reactors, and produces the fissile material for nuclear weapons. Its symbol is U and its atomic number is 92.
There are currently no uses for this element outside of scientific research. Its symbol is Bh and its atomic number is 107.
Down
This element is used to dope calcium chloride crystals for use in optical lasers. It is also used in infrared absorbing glass and as a neutron absorber in nuclear reactors. Its symbol is Sm and its atomic number is 62.
This element is used as a source of radiation in portable x-ray devices. Its symbol is Tm and its atomic number is 69.
This element is used to create a type of plutonium is used to dope calcium chloride crystals for use in optical lasers. It is also used in infrared absorbing glass and as a neutron absorber in nuclear reactors. Its symbol is Np and its atomic number is 93.
This element is a metal twice the density of lead. It is used to make hard alloys for fountain pen tips, electrical contacts and needles. Its symbol is Os and its atomic number is 76.
This element is used as red phosphor in television sets. Its symbol is Eu and its atomic number is 63.
This element is used for research purpose. It can be used as beta radiation source in luminous paint, in nuclear batteries for guided missiles, watches, pacemakers and radios, and as a light source for signals. Its symbol is Pm and its atomic number is 61.
This element is used to identify gold and silver ores. Its symbol is Cf and its atomic number is 98.
This element is used to date the age of meteorites. Its symbol is Lu and its atomic number is 71.
This element was commonly used in batteries, fluorescent lights, felt production, thermometers and barometers before it was discovered that it contained a deadly toxic compound. its symbol is Hg and its atomic number is 80.
This element is used to make specialized yellow glass goggles for glass blowers and welders. Its symbol, is Pr and its atomic number is 59.
This element is a pink colouring agent in glazes and glasses. Its symbol is Er and its atomic number is 68.
This element is diverse and has many uses, such as making batteries, cable sheathing and ammunition. Its symbol is Pb and its atomic number is 82.
This element is used to make carbon arc lights which are used in the motion picture industry for studio lighting and projector lights. It is also used to make flints for lighters. Its symbol is La and its atomic number is 57.
This element is usually mixed with other metals to create alloys which are used to make automatic fire sprinkler systems, fire detection systems and electrical fuses. Its symbol is Bi and its atomic number is 83.
This element has no current uses other than scientific research. Its symbol is Db and its atomic number is 105.
This element is used for nuclear reactor control rods because of its ability to absorb neutrons and its good mechanical and corrosion resistance qualities. Its symbol is Hf and its atomic number is 72.