How Do Isoelectronic Ions Compare in Size and Configuration?

  • Thread starter Thread starter k-rod AP 2010
  • Start date Start date
  • Tags Tags
    Ions
Click For Summary
SUMMARY

The discussion focuses on the comparison of isoelectronic ions: P3-, S2-, Mn7+, Sc3+, and Ti4+. Each ion possesses the noble gas electron configuration of Argon ([Ar]). The ion with the smallest radius is Mn7+, due to its higher proton count, which exerts a stronger attractive force on the electrons. The correct ranking from smallest to largest ionic radius is Mn7+, Ti4+, Sc3+, S2-, and P3-.

PREREQUISITES
  • Understanding of ionic configurations and noble gas notation
  • Knowledge of atomic structure and electron configurations
  • Familiarity with the concept of ionic radii
  • Basic principles of effective nuclear charge
NEXT STEPS
  • Study the concept of ionic radii and how they vary among isoelectronic species
  • Learn about effective nuclear charge and its impact on atomic and ionic size
  • Explore the periodic trends in ionic sizes across different groups
  • Investigate the implications of ionic configurations in chemical reactivity
USEFUL FOR

Chemistry students, educators, and anyone interested in atomic structure and periodic trends will benefit from this discussion.

k-rod AP 2010
Messages
36
Reaction score
0

Homework Statement


P3-, S2-, Mn7+ , Sc3+, and Ti4+ are isoelctronic ions. 1)Write the ground state noble gas configuration for each of these ions. 2)Which one of them would you expect to thave the smalles radius? 3)Rank then from smallest to largest.


Homework Equations





The Attempt at a Solution


1) I am not sure what to answer here, i know that in ionic form they all have the noble gas configuration of Ar, but what is the question asking for exactly? Is it asking for the configuration of these elements in neutral atom form?

2) Mn should have the smallest radius b/c it has the largest number of protons of the group and would pull the electrons in closer right?

3) In order they should be Mn, Ti, Sc, S, P, correct?
 
Physics news on Phys.org
I guess they want just [Ar] for each one. And looks to me like you are right.
 
Last edited by a moderator:
ok that's what i figured, but the wording was strange so i wanted to see if u guys could see something i didnt. thanks though
 

Similar threads

Chemistry How do we know ##BF_3## has Lewis structure but ##Al_2S_3## does not?
  • · Replies 1 ·
Replies
1
Views
2K
How Do Atom and Ion Sizes Compare in Various Elements?
  • · Replies 1 ·
Replies
1
Views
5K
Electronic configurations and periodicty
  • · Replies 2 ·
Replies
2
Views
7K
How Do Carbon Ions Behave in a Tandem Accelerator?
  • · Replies 1 ·
Replies
1
Views
2K
How Do You Balance Complex Chemical Equations in Ionic and Neutral Forms?
  • · Replies 5 ·
Replies
5
Views
2K
Review My Work: Arranging Atoms & Ions by Radius
  • · Replies 2 ·
Replies
2
Views
3K