A Visual Encyclopedia of the Periodic Table

La Ce Pr TbGdEuSmPmNd Dy Ho Er Tm Yb Lu Lanthanides This set is named after lanthanum, the first element in this series. The nam ...

110 Lanthanides 57 57 82 State: Solid Lanthanum Discovery: 1839 La 57 This lamp uses lanthanum to reduce the yellow colour in it ...

111 Lanthanides Praseodymium Pr 59 State: Solid Discovery: 1885 59 59 82 Cerium Ce 58 Cerium was the first of the lanthanides to ...

112 Lanthanides Neodymium Nd 60 State: Solid Discovery: 1885 State: Solid Discovery: 1945 60 61 60 61 84 84 Promethium Pm 61 Str ...

113 Lanthanides Samarium Sm 62 Europium Eu 63 This element is named after the mineral samarskite from which it was first purifie ...

114 Lanthanides Gadolinium Gd 64 Terbium Tb 65 Gadolinium, and its mineral ore gadolinite, are named after the Finnish chemist J ...

115 Lanthanides Dysprosium Dy 66 Holmium Ho 67 Dysprosium reacts more easily with air and water than most other lanthanide metal ...

116 Erbium Er 68 Thulium Tm 69 Like terbium and ytterbium, erbium is also named after the Swedish village of Ytterby, near which ...

117 Lanthanides Ytterbium Yb 70 Lutetium Lu 71 Ytterbium tends to be more reactive than other lanthanide metals. It is stored in ...

This uranium (U) sample is waste material from a nuclear power plant. 118-119_Actinides_Opener.indd 118 02/12/16 6:52 pm ...

Actinides Atomic structure All the elements in this group have two electrons in their outer shell. Their atoms all have seven el ...

120 Actinides 120 The most common natural radioactive metal, thorium is used inside vacuum tubes to allow an electric current to ...

121 Actinides 121 The name protactinium means “before actinium”. This is because a uranium atom decays to form a protactinium at ...

122 Actinides Sitting next to uranium in the periodic table, neptunium was named after the planet Neptune. It exists in small am ...

123 Actinides This metallic element is not found in nature. Instead, it is produced inside nuclear reactors when uranium or plut ...

124 Actinides Curium is a silvery, radioactive metal that glows reddish purple in the dark. This element was discovered by the U ...

125 Actinides Californium Cf 98 Einsteinium Es 99 Only a few milligrams of einsteinium are made every year. This machine uses ca ...

126 Actinides Fm 100 State: Solid Discovery: 1955 101 101 157 Mendelevium Md 101 This artificial element was named after the Ita ...

127 Actinides Nobelium No 102 State: Solid Discovery: 1965 103 103 163 Lawrencium Lr 103 Lawrencium is named after the US scient ...

Pure gallium (Ga) becomes liquid at 29°C (84.2°F). 128-129_Boron_Group_Opener.indd 128 12/12/16 5:39 pm ...