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NTA Abhyas JEE Main2020ChemistryChemical Bonding and Molecular StructurePractice

The incorrect order of lattice energy is

Options

  1. AA l F 3 > M g F 2
  2. BL i 3 N > L i 2 O
  3. CNaCl > LiF
  4. DTiC > ScN

Correct answer

C. NaCl > LiF

Step-by-step solution

The incorrect order of lattice energy is NaCl > LiF as lattice energy of LiF is more than NaF L E ∝ q + . q - r + + r - A. A l F 3 > M g F 2 [Charge on cation] B. L i 3 N > L i 2 O [Charge on anion] C. N a C l < L i F [Size of cation and anion] D. TiC > ScN [Charges on cation and anion].

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