Question

Why acidic behaviour is directly proportional to s character?

Answer 1

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Since electronegativity is largely associated by how tightly valence electrons are held, as s character of a hybrid orbital increases, it's electronegativity increases and hence its acidity increases. ... when sp hybridization in a molecule so it will be more acidic because s character increase the acidity of molecuLE

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Answer 2

The more electronegative the atom is, the more acidic that hydrogen is. Electronegativity depends on %s character. ... Since electronegativity is largely associated by how tightly valence electrons are held, as s character of a hybrid orbital increases, it's electronegativity increases and hence its acidity increases.