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                                    40. Atomic weight of chlorine is 35.5.It has two isotopes of atomic weight 35 and 37.What is the percentage of the heavier isotope in the sample? (1) 5 (2) 10 (3) 25 (4) 20 | 
                            
| Answer» 40. Atomic weight of chlorine is 35.5.It has two isotopes of atomic weight 35 and 37.What is the percentage of the heavier isotope in the sample? (1) 5 (2) 10 (3) 25 (4) 20 | |