Exams › JEE Main › Chemistry

Lattice energy of an ionic compound depends upon

1. Charge on the ion and size of the ion
2. Packing of ions only
3. Size of the ion only
4. Charge on the ion only

Correct answer: Charge on the ion and size of the ion

Solution

By the Born-Lande/Coulombic relation, lattice energy is proportional to the product of ionic charges and inversely proportional to the inter-ionic distance. Hence it depends on both the charge on the ions and the size of the ions.

Related JEE Main Chemistry questions

• Although the electronegativity gap between N and F is larger than that between N and H, ammonia has a dipole moment of 1.5 D while nitrogen trifluoride has only 0.2 D. The reason is that
• When N₂ is converted into N₂⁺, the dissociation energy of the N–N bond ______, and when O₂ is converted into O₂⁺, the dissociation energy of the O–O bond ______.
• From the ions listed below, which pair has geometries that can be accounted for by the same type of orbital hybridization? NO₂⁻, NO₃⁻, NH₂⁻, NH₄⁺, SCN⁻
• Atoms A and B have electronegativities of 1.20 and 4.0, respectively. What is the percentage ionic character of the A–B bond?
• In the phosphate ion, PO₄³⁻, what is the formal charge on an oxygen atom that is singly bonded to phosphorus in a P–O bond?
• Among the following species, which one has no unpaired electrons?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →