Mass of total positive charge present in anatom is7348 times to that of the mass of a negativity charged particle . Findthe atomic number of an element . Find out its valency.

Mass of total positive charge present in anatom is7348 times to that o

1.	Mass of total positive charge present in anatom is7348 times to that of the mass of a negativity charged particle . Findthe atomic number of an element . Find out its valency.
Answer» Solution :Massof a proton is 1837 times that of electron `{:("MASS of one proton",=,1837),(""?,----,7348),((7348)/(1837)=4,,):}` Hence the ATOMIC NUMBER is 4.Electronic arrangement is 2 , 2 . Itcan lose 2 electrons to ATTAIN duplet configuration and hence it forms`Be^(+2)` ion. Hence its valency is' +2'.