JEE Advanced Chemistry question

Among CH4, NH3 and H2O, acidity of H2O is maximum because

(A)Oxygen contains two lone pairs of electrons
(B)Bond angle in H2O is less than 109°28′ due to VSEPR
(C)Oxygen is more electronegative than C or NCorrect
(D)H2O is an associated liquid

Answer: (C)

Solution

Acidity here means the ease with which the central-atom–hydrogen bond releases H⁺. Going across the period C → N → O, electronegativity increases, so the X–H bond becomes progressively more polarised and the hydrogen more easily released as H⁺; since O is the most electronegative of the

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Question ID VK-159375