Which will have higher lattice energy and why?

The bond between ions of opposite charge is strongest when the ions are small. The lattice energies for the alkali metal halides is therefore largest for LiF and smallest for CsI, as shown in the table below. The ionic bond should also become stronger as the charge on the ions becomes larger.

How do you compare lattice energy?

Lattice enthalpy of two salts can be compared by using Born–Lande equation (one of method) as, So, greater the charges of cation & anion, higher will be the lattice energy of the corresponding salt. Again, smaller the ionic radii of cation and anion, higher will be the lattice energy.

Which salt has the lowest lattice energy?

iodide salt
Because the ionic radii of the cations decrease in the order K + > Na + > Li + for a given halide ion, the lattice energy decreases smoothly from Li + to K +. Conversely, for a given alkali metal ion, the fluoride salt always has the highest lattice energy and the iodide salt the lowest.

Which has higher lattice energy NaCl or MgO?

The lattice enthalpy of MgO is greater than that of NaCl. The reason is in MgO, two +ions attract two –ions, whereas in NaCl, the attraction is between one +ion and one –ion.

What does a higher lattice energy mean?

Either way, we can see that lattice energy is a measure of the forces between the ions in an ionic solid. Overall, sodium chloride’s lattice energy is 788 kJ/mol. The more stable the ionic solid, the larger the lattice energy will be. This is because the more stable bonds are, the harder they are to break.

Which element has the highest lattice energy?

Answer: 1. Sodium fluoride (NaF) shows highest lattice energy among these compounds since Na+ features ions of the same charge, the lattice energy increases as the size of the ions increases.

Why does NaCl have high lattice energy?

Why is the lattice energy of Nacl more than that of CsCl? If size of Na is smaller than that of Cs, then according to Fajan’s rule, Na should polarise Chlorine more and therefore, NaCl must have more covalent character than CsCl (and higher covalent character means low lattice energy).

Which has a higher lattice energy MgO or NaCl?

The question says that the MgO lattice enthalpy is about 5 times greater than that of NaCl. The extra is due to the shorter distance between the ions in MgO.)

What does lower lattice energy mean?

Lattice energy is also known as lattice enthalpy and can be stated in two ways. Ionic solids are always more stable than gaseous ions, meaning that ionic solids are in a lower energy state than gaseous ions.