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Stability of the species Li 2 , − 2 Li and + 2 Li increases in the order of -

1. Li 2 < − 2 Li < + 2 Li
2. − 2 Li < Li 2 < + 2 Li
3. Li 2 < + 2 Li < − 2 Li
4. − 2 Li < + 2 Li < Li 2

Correct answer: − 2 Li < + 2 Li < Li 2

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