Fecl2 express your answers as ions separated by a comma.

dissociate into and ions.

is made up of  iron Fe and Chlorine Cl. Its dissociation reaction will be

Hence, we can conclude that   dissociate into and ions.

To know more about dissociation reaction, refer to the link:

link

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer