Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

WHY DOES NH3 FORMS HYDROGEN BOND BUT PH3 DOES NOT?
Asked by Jinu sony | 09 Oct, 2013, 06:07: PM
Expert Answer

The stability of hydrides decrease down the group due to decrease in bond dissociation energy down the group.

  NH3 > PH3 > AsH3 > SbH3 > BiH3

The electronegativity of N (N-3.0) is much higher that of H( H-2.1). Due to this, N-H bond is quite polar and hence NH3 undergoes intermolecular H-bonding.

On the other hand, both P and H have an electronegativity of 2.1. Therefore, P-H bond is non polar and hence PH3 does not form H-bonds.

Answered by Hanisha Vyas | 09 Oct, 2013, 06:57: PM
CBSE 12-science - Chemistry
Asked by kushwaharitik9129 | 14 Jul, 2022, 01:06: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by gurugubellisaivishal2705 | 09 Jul, 2022, 12:16: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by nonuhasan2 | 20 Nov, 2021, 12:05: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by cute44464 | 01 Mar, 2021, 01:17: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by manivannanbalakrishnan52 | 09 Dec, 2020, 10:06: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by onkaronkar618 | 12 Oct, 2020, 11:38: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by contactus.topperlearning | 13 Sep, 2020, 01:21: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by nishaohlyan835 | 30 Jun, 2020, 04:18: PM
ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by adityachavan015 | 23 Jun, 2020, 11:38: AM
ANSWERED BY EXPERT
Season Break Offer!
Get 60% Flat off instantly.
Avail Now
×