In each row, pick the compound with the bigger lattice energy. Note: lattice energy is always...

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Question

In each row, pick the compound with the bigger lattice energy. Note: lattice energy is always greater than zero. Which compou

Answer 1

Answer #1

According to Fajan's Rule,

Lattice energy, U is inversely proportional to (r_cation + r_anion).

For the first case, r_Rb⁺ > r_Sr⁺ . So, SrCl2 has the higher lattice energy.

for the second case, r_O^2- > r_{F^{- .}} So, BeF₂ has the higher lattice energy.

For the third case, r_Cs⁺ > r_Na⁺ . So, NaBr has the higher lattice energy.

Answer 2

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