Question

LiH is more stable than NaH why?

Answer 1

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Due to small size of Li+, the lattice energy of LiH is greater
Due to small size of Li+, the lattice energy of LiH is greater
Due to greater size of H−, the lattice energy of LiH is greater
Due to greater size of H−, the lattice energy of LiH is greater
LiH is more covalent than NaH
LiH is more covalent than NaH
Due to greater size of Na+, the lattice energy of NaH is greater.
Due to greater size of Na+, the lattice energy of NaH is greater.
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Answer 2

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LiH is more stable than NaH because when the size of the alkali metal increases, M-H Bond becomes weaker.

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