Which one is higher boiling point on nh3 or ph3 explain?
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We know that in Periodic Table from going up to down electronegativity decreases! This is due to increase in the size of atomic radius.
NH3 molecules makes strong intermolecular H bonding b/w themselves. But due to lesser electronegativity of larger PH3 molecules, they cannot form Hydrogen Bonding b/w themselves! Instead of this there is Weak London dispersion force b/w them.
So due to greater attraction in NH3 molecules, they are tightly held. So the Boiling point of NH3 is greater than PH3.
NH3 molecules makes strong intermolecular H bonding b/w themselves. But due to lesser electronegativity of larger PH3 molecules, they cannot form Hydrogen Bonding b/w themselves! Instead of this there is Weak London dispersion force b/w them.
So due to greater attraction in NH3 molecules, they are tightly held. So the Boiling point of NH3 is greater than PH3.
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