What is the element of 1s22s22p63s23p64s23d104p65s14d8?

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Can someone me with questions 15 to 17 plz.