A Visual Encyclopedia of the Periodic Table

169 The Oxygen Group minerals, such as celestine. Many sulfur compounds smell bad. For example, the rotten- egg smell of volcani ...

Danakil Depression This hot spring in Africa’s Danakil Depression is surrounded by a yellow crust of pure sulfur. The sunken reg ...

At more than 100 m (330 ft) below sea level, the Danakil Depression is one of the lowest points on Earth’s surface. This area re ...

172 The Oxygen Group Selenium Se 34 Forms Uses Selenium is named after Selene, the Greek goddess of the Moon. This element is a ...

173 The Oxygen Group Tellurium Te 52 Forms Uses Tellurium is one of the 10 rarest elements on this planet. It gets its name from ...

174 The Oxygen Group Polonium Po 84 Forms Uses 84 84 125 State: Solid Discovery: 1898 This mineral contains uranium atoms that b ...

175 The Oxygen Group Livermorium Lv 116 Lawrence Livermore National Laboratory, California, USA Heavy ion cyclotron, Joint Insti ...

This glass sphere contains pure iodine (I). 176-177_Halogen_Group_Opener.indd 176 02/12/16 6:52 pm ...

The Halogen Group Atomic structure All members have seven electrons in the outer shell of each atom. There is space for one more ...

178 The Halogen Group Forms Fluorine F 9 9 10 State: Gas Discovery: 1886 This highly reactive element is incredibly dangerous wh ...

179 The Halogen Group Some toothpastes contain fluorides that harden tooth enamel. Toothpaste Uses These patterns form after the ...

180 The Halogen Group This glass sphere traps pure chlorine so as to prevent any reactions with air. Forms Chlorine Cl 17 17 17 ...

181 The Halogen Group Uses against this weapon. Today, chlorine is used in many ways. Its compounds are present in everything fr ...

Ocean clean up Chlorine is a common ingredient in cleaning products, and can be used for scrubbing everything from bathroom tile ...

The two divers use chlorine twice in the cleaning process. First, they cover the thick seaweed with a sheet made of PVC, a tough ...

184 The Halogen Group Forms Bromine Br 35 35 35 45 State: Liquid Discovery: 1826 Bromine is the only non-metal that is a liquid ...

185 The Halogen Group Uses use of this element is as a disinfectant to clean water. It works better than chlorine in hot tubs as ...

186 The Halogen Group 53 53 74 State: Solid Discovery: 1811 Betadine This disinfectant is applied to wounds to stop the spread o ...

187 The Halogen Group Tennessine Ts 117 Atoms of astatine are unstable, and typically break down after just a few hours, into at ...

Krypton (Kr) becomes visible only when it is electrified. 188-189_Noble_Gases_Opener.indd 188 02/12/16 6:52 pm ...