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What would be the correct answer for the following question? I mean I know it will be 4000KJ/mol, but I m confused with the sign. Technically, since Lattice energy is the energy released, so it is always negative. But we mostly see that it's given as positive . Here since both the options are present, it's confusing me. Should I go with -4000 or 4000? enter image description here

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    $\begingroup$ What is the sign for LiF, as given in the problem statement? $\endgroup$ – Ivan Neretin Jan 23 at 14:55
  • $\begingroup$ Negative @Ivan Neretin $\endgroup$ – user67074 Jan 23 at 18:07
  • $\begingroup$ That's the answer to your own question too. $\endgroup$ – Ivan Neretin Jan 23 at 18:31

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