Shristy posted an Question
August 30, 2020 • 17:48 pm 30 points
  • IIT JAM
  • Chemistry (CY)

5. which one of the following order of two properties of 14- and l5-group elements is not correct? (a) bl< bbr3

5. Which one of the following order of two properties of 14- and l5-group elements is not correct? (A) Bl< BBr3

2 Answer(s) Answer Now
  • 0 Likes
  • 2 Comments
  • 0 Shares
  • comment-profile-img>
    Dinesh khalmaniya 1 best-answer

    option B

    eduncle-logo-app

    check it

    eduncle-logo-app

    The thermal stability of hydrides decreases on moving down the group. This is due to a decrease in the bond dissociation enthalpy of hydrides on moving down the group.

  • comment-profile-img>
    Priyanshu kumar Best Answer

    Option A is wrong

    cropped2628061279100196631.jpg
    eduncle-logo-app

    option B is right

    eduncle-logo-app

    explanation ?

    eduncle-logo-app

    The acceptor orbital (empty p-orbital) on boron is involved to a greater extent in n bonding in BF3​,BCl3​ & BBr3​. BI3​>BBr3​>BCl3​>BF3​ 

    eduncle-logo-app

    BI3 is most acidic

    eduncle-logo-app

    And thermal stability decreases down the group

    eduncle-logo-app

    got this shristy??

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