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    				| 1. | 
                                    In the modern periodic table, if an element with atomic number 'X' is an inert gas then an element with atomic number (X-1) will be placed in: | 
                            
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Answer»  In the modern periodic table, if an element with atomic number 'X' is an inert gas then an element with atomic number (X-1) will be placed in:  | 
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