Question

Lattice energy in sodium chloride is 'X'kj.
Assuming the same interionic distance,
what will be the lattice energy of
magnesium sulphide?​

Answer 1

Answer:

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Answer 2

Answer:

lattice energy = lattice energy is defined as energy released when one mole of ionic solid dissociates into its gaseous state.

lattice energy = U= -KQ₁Q₂/rο

Q₁ & Q₂ are charges of ionic.

Q₁ =Q₂ = 1

for NaCl ⇄ Na⁺  +  Cl⁻

U = X  

X= K × 1 × 1 /rо

for MgS

Q₁  =  Q₂ =2

U= K× 2 × 2 /rο = 4K / rο = 4x  

SO THE VALUE OF X is = 4