MY PROFFESOR WHILE TEACHING ME ABOUT 1A GROUP ELEMENTS SAID THAT FROM TOP TO BOTTOM DENSITY OF ELEMENTS  INCRESES DUE TO THE INCRESE IN MASS BUT  WITH INCRESING IN MASS SIMULTANEOUSLY INCRESES NEW SHELLS AND ATOMIC SIZE ALSO  INCRESES, THIS MEANS VOLUME INCRESES HENCE DENSITY INCRESES

 

SO MASS BY VOLUME WILL ALWAYS BE SAME AS FOR ALL ELEMENTS ,TOP TO BOTTOM NEW SHELL WILL BE ADDED 

EXPLAIN  PLLLLLLLLLLLLLLLLLLLLZZZZZZZZZZZ

hey say what result or what physical quantity is obtained when x[displacement] is differentiated thrice   

 hey dont guess  please confirm your answer and replay

please give me the value of d(a)/dt

ie   when accleration is differenciated with time         

    pllllllllllllllllllzzzzzzzzzzzzzzz

 with solution and reason also