jagomart
digital resources
picture1_Pdf Printable Periodic Table 195560 | Ch0001041060


 132x       Filetype PDF       File size 1.08 MB       Source: www.cnm.manchester.ac.uk


File: Pdf Printable Periodic Table 195560 | Ch0001041060
an introduction to general inorganic chemistry mendeleev s periodic table of the elements dmitri mendeleev born 1834 in the soviet union in 1869 he organised the 63 known elements into ...

icon picture PDF Filetype PDF | Posted on 07 Feb 2023 | 2 years ago
Partial capture of text on file.
            An Introduction to General / Inorganic Chemistry 
             
            Mendeleev’s Periodic Table of the Elements 
             
                        Dmitri Mendeleev born 1834 in the Soviet Union. 
                        In 1869 he organised the 63 known elements into a 
                        periodic table based on atomic masses. He predicted 
                        the existence and properties of unknown elements and 
                        pointed out accepted atomic weights that were in error. 
             
                                                                             
            The periodic table is thus an arrangement of the 
            elements in order of increasing atomic number.  
             
            Elements are arranged in rows called periods. 
             
            Elements with similar properties are placed in the 
            same column. These columns are called groups. 
          An Introduction to General / Inorganic Chemistry 
           
          The modern day periodic table can be further 
          divided into blocks. 
           
                                                              
             http://www.chemsoc.org/viselements/pages/periodic_table.html 
           
          The s, p, d and f blocks 
           
          This course only deals with the s and p blocks.  
           
          The s block is concerned only with the filling of s 
          orbitals and contains groups I and II which have 
          recently been named 1 and 2. 
           
          The p block is concerned only with the filling of p 
          orbitals and contains groups III to VIII which have 
          recently been named 13 to 18. 
           An Introduction to General / Inorganic Chemistry 
            
           Groups exist because the electronic 
           configurations of the elements within each group 
           are the same. 
            
            
                     Group       Valence Electronic 
                                    configuration 
                        1                  s1 
                        2                  s2 
                                           2 1
                        13                s p  
                                           2 2
                        14                s p  
                                           2 3
                        15                s p  
                                           2 4
                        16                s p  
                                           2 5
                        17                s p  
                                           2 6
                        18                s p  
            
            
           The type of chemistry exhibited by an element is 
           reliant on the number of valence electrons, thus 
           the chemistry displayed by elements within a 
           given group is similar. 
            
            
           Physical properties 
            
           Elemental physical properties can also be related 
           to electronic configuration as illustrated in the 
           following four examples: 
          An Introduction to General / Inorganic Chemistry 
           
          1. Ionisation energy 
           
          First ionisation energy 
                                            +    -
                          E(g)         E(g)  + e  
           
          If the energy required to remove one electron 
          from the gaseous elements is plotted against 
          atomic number a definite periodic pattern 
          appears. 
           
                                                                 
          1st ionisation energies: 
          i) vary systematically 
          ii)  increase across a period 
          iii) decrease down a group 
           
                   
                  Why? 
The words contained in this file might help you see if this file matches what you are looking for:

...An introduction to general inorganic chemistry mendeleev s periodic table of the elements dmitri born in soviet union he organised known into a based on atomic masses predicted existence and properties unknown pointed out accepted weights that were error is thus arrangement order increasing number are arranged rows called periods with similar placed same column these columns groups modern day can be further divided blocks http www chemsoc org viselements pages html p d f this course only deals block concerned filling orbitals contains i ii which have recently been named iii viii exist because electronic configurations within each group valence configuration type exhibited by element reliant electrons displayed given physical elemental also related as illustrated following four examples ionisation energy first e g if required remove one electron from gaseous plotted against definite pattern appears st energies vary systematically increase across period decrease down why...

no reviews yet
Please Login to review.