Arrange the following species in order of decreasing size

  • Thread starter WK95
  • Start date
  • #1
WK95
139
1

Homework Statement


Arrange the following species in order of decreasing size (largest radius first):

Br-
Cl-
Ca2+
K+

Homework Equations




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.

Homework Statement


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.


Homework Equations



The Attempt at a Solution


PCI4+ is Tetrahederal/Tetrahedron
PCl6- is Octahedral/Octahedron
 
Last edited:

Answers and Replies

  • #2
Borek
Mentor
29,102
3,718
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.
 

Suggested for: Arrange the following species in order of decreasing size

  • Last Post
Replies
8
Views
1K
Replies
1
Views
473
Replies
6
Views
367
Replies
3
Views
921
Replies
4
Views
4K
  • Last Post
Replies
2
Views
1K
Replies
2
Views
940
Replies
6
Views
1K
Replies
1
Views
940
Replies
2
Views
705
Top