Page 132 - The Periodic Table Book
P. 132

5
              B    Boron


                                                                                   5     5     6   State: Solid
                                                                                                   Discovery: 1808
       The Boron Group          This transluscent mineral                  Laboratory sample
             Forms
                                                                              of pure boron


                                is found in dried lakes.

                                                                                                      Boron-rich corn

                                                                                                        Corn
             U exite  l











                                                                                                 Boron-deficient
                                                                                                   corn does not
              Kernite                                                                              grow properly.


                                                                                                 This metal
                                                                                                 is dark and
                                                                                                 slightly shiny.



                                                                                                          Colemanite









                                               This is a
                                               colourless
                                               form of  a
                                               compound
                                               of  sodium
                                               and boron.









           Some boron compounds are among the                  including ulexite and kernite. The demand for
           toughest artificial substances on Earth, with  this element was once so high that people moved
           only diamond being harder. This element is          to live in the extreme heat of Death Valley, USA,
           a very hard material and becomes even harder        to work in boron mines there. Compounds of
           when made to react with carbon or nitrogen. Pure  boron in soil are essential for plants to grow
    130    boron can be extracted from various minerals,       healthily. We use boron in our homes every day.





   130-131_Boron.indd   130                                                                                      02/12/16   6:53 pm
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