Statement (I) : Bond angle of H2O> H2S > H2Se > H2TeStatement (II) : Down the group EN of cental atom decreases

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Both (I) & (II) are true

(I) is true & (II) is false

(I) is false & (II) is true

Both (I) & (II) are false

answer is A.

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Detailed Solution

In similar molecules of a group in which the central atom has lone pair , bond angle decreasesdown the group as the E.N of central atom decreasesNH3 > PH3 > AsH3 > SbH3 > BiH3 H2O> H2S > H2Se > H2Te > H2PoConsider H2O and H2PoBond pairs in H2O are closer to Oxygen due to its higher E.NSo lone pair has lesser influenceBond pairs in H2Po are farther to Po due to its lesser E.NSo lone pair has greater influence Down the group from H2O to H2Po as E.N of central atom decreasesinfluence of lone pair increases, bond pairs come closer to each other ,bond angle decreases

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