1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Arrange the following species in order of decreasing size

  1. Oct 16, 2013 #1
    1. The problem statement, all variables and given/known data
    Arrange the following species in order of decreasing size (largest radius first):

    Br-
    Cl-
    Ca2+
    K+

    2. Relevant equations


    3. The attempt at a solution
    Br- would get Kr's configuration, Cl- would get Ar's, Ca2+ will get Ar's, K+ will also get Ar's.

    Ar has 98pm radii while Kr has 112pm.

    Br- would be first for sure.
    1. The problem statement, all variables and given/known data
    A) linear
    B) T-shape
    C) octahedron
    D) seesaw
    E) square plane
    F) bent
    G) trigonal bipyramid
    H) square pyramidal
    I) trigonal pyramid
    J) tetrahedron
    K) icosahedral
    L) None of the above
    Enter two letters that correspond to PCl4+> and PCl6− in order, e.g. AB, DC, EA, etc.


    2. Relevant equations

    3. The attempt at a solution
    PCI4+ is Tetrahederal/Tetrahedron
    PCl6- is Octahedral/Octahedron
     
    Last edited: Oct 16, 2013
  2. jcsd
  3. Oct 17, 2013 #2

    Borek

    User Avatar

    Staff: Mentor

    Anons are larger than cations, and comparing cations and anions in pairs is quite obvious.

    Or: you already know Br is the largest, now just sort the rest. They have the same configuration, and the only thing that changes is the nucleus charge.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Arrange the following species in order of decreasing size
  1. Niches and Species (Replies: 1)

Loading...