File: Pdf Printable Periodic Table 194922 | Genchem3
lecture 3 outline 3 1 introduction to the periodic table 3 2 structure of the electron shell 3 3 ionisation energy and electron affinity developmentof the periodic table themodern periodictable ...
Filetype PDF | Posted on 06 Feb 2023 | 2 years ago
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...Lecture outline introduction to the periodic table structure of electron shell ionisation energy and affinity developmentof themodern periodictable was developed bythe russian chemist dimitrij mendelejev german lothar meyer around recognised periodicity elements although scientists previously classified succeeded in interpretating principles an adequate way orders known according their atomic mass realised that after a certain number similar or related properties appeared again he ordered these vertically underneath each other but still ordering criteria increasing b chemically below is this principle always obeyed argon ar u potassium k tellurium te iodine i reasoning potassiumisa typical alkali metal which would be completely misplaced group noble gases same applies for changeof telurium chemical relationship more important modern metals metalloids nonmetals l ka n e o r h t g m period p s main vertical groups ia iia alkaline earth iiia boron family iva carbon va nitrogen via oxygen ...