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    				| 1. | 
                                    An isotope Q has 18 neutron and mass number of 34 write an electronic arrangement | 
                            
| Answer» MASS Number = No. of protons + No. of neutrons 34 = No. of protons + 18 No. of protons = 34 - 18 = 16 ALSO, No. of protons = No. of electrons So, no. of electrons is also 16 Electronic configuration in KLMN FORM - 2,8,6 Electronic configuration in spdf form - 1s², 2s², 2p⁶, 3s², 3p⁴ hope this will help you | |