Question

For a given arrangement of ions, the lattice energy decreases as ionic radius ________ and as ionic charge ________.

Answer 1

For  a  given  arrangement  of  ions,the  lattice  energy  decreases  as  ionic  radius  decrease  and  as  ionic  charge  increases.The  decrease  in  ionic  charge   result  in  lowering  the  electrostatic  force  which  result  to  a formation of  weak  bond  hence a  decrease in lattice  energy