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$X_{2} + H_{2} O \to_{}^{} H_{3} O^{+} (a q) + X^{-} (a q) + O_{2} (g)$

$Δ G °$ is negative in case of fluorine and is positive in case of iodine

Solid $I_{2}$ has metallic lustre

All halogens undergo disproportionation in presence of conc. NaOH

Halogens do not react with $N_{2}$ directly

answer is A, B, D.

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$F_{2}$ doesn’t undergo disproportionation in presence of conc. NaOH

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