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NCERT Class XII Chemistry
Chapter - The p-Block Elements
Questions with Solutions

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Question : 4 of 74
Marks: +1, -0
Why does NH3 form hydrogen bond but PH3 does not?
Solution:  
Hydrogen bond is formed between electronegative atom andhydrogen atom. Nitrogen is an electronegative atom and electronegativitydecreases down the group so PH3 cannot form H-bond.
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