Pinki Payal posted an Question
October 03, 2020 • 04:36 am 30 points
  • IIT JAM
  • Chemistry (CY)

Uoqeh n sey aluu bond an ua (b)oh phmao2 has c h 2hasph >ho

uoqeh n sey aluu bond an uA (b)OH PHMao2 Has C H 2HasPH >HO

2 Answer(s) Answer Now
  • 0 Likes
  • 2 Comments
  • 0 Shares
  • comment-profile-img>
    Priyanshu kumar best-answer

    Option A Explanation:- Between NH3 and PH3:- The electronegativity of Nitrogen is much more than phosphorous. Thus the N-H bonds in NH3 are polar and the Hydrogen atoms of NH3 acquire a partially positive charge while the H atoms of PH3 remain neutral. The partially charged H atoms of NH3 repels each other and thus Bond Angle increases. While PH3 lacks this effect. Thus bond angle of NH3 is greater than PH3.

    cropped3796585913546229794.jpg
    eduncle-logo-app

    Between NH3 and H20:- In H2​O there are two lone pairs of electrons whereas in NH3​ there are only one lone pair of electron. In H2​O, lone pair-lone pair repulsion takes place whereas in NH3​ lone pair-bond pair repulsion takes place. The lone pair-lone pair repulsion is more strong than lone pair-bond pair repulsion. Thus, the bond angle in a water molecule is less than the ammonia molecule. Bond angle α1/No.of lone pair  (for same hybridisation compound)

    eduncle-logo-app

    Between H20 and H2S:- As we know in both structure two bond pair and two lone pair are present and both has tetrahedral geometry. In H2O, oxygen is more electronegative, electrons of two O-H bonds are more attracted towards oxygen atom. Consequently more bond pair- bond pair repulsion take place,so bond angle get increase On the other hand in H2S, because of less electronegative character of S,less repulsion is present so angle get decrease.

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers