Lattice energy?

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Why does the difference between experimental and calculated value of AgCl's lattice energy is larger than of NaCl's.
p.s. this is under the Born-Haber cycle chapter so i think they are somehow related.
Thanx a lot!

2007-07-14 17:58:05 · 1 answers · asked by mcpheevn 1 in Science & Mathematics ➔ Chemistry

1 answers

This is a classic exam question! The large difference is due to the fact that the assumptions in calculating the LE of AgCl using a purely ionic model are invalid due to its considerable covalent character.

2007-07-14 21:33:24 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋