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in the order of boiling point of PH3

in the order of boiling point of PH3

Grade:11

1 Answers

Sowmiya
45 Points
one month ago
correct order of boiling point is: H2O > SbH3 > NH3 > AsH3 > PH3.
Boiling point depends on the molecular mass of the compound. As we go down the group molecular mass increases so does boiling point.  
 
But due to presence of hydrogen bonding in H2O and NH3, they have exceptionally high boiling point.Thus, the boiling point of NH3 is higher than PH3 and AsH3.
 
The boiling point of H2O is highest among all because it can form four hydrogen bonds with surrounding water molecules while NH3 can form only one hydrogen bond.
 

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