• Skip to main content
  • Skip to primary sidebar
  • Skip to footer
  • NCERT Solutions
    • NCERT Books Free Download
  • TS Grewal
    • TS Grewal Class 12 Accountancy Solutions
    • TS Grewal Class 11 Accountancy Solutions
  • CBSE Sample Papers
  • NCERT Exemplar Problems
  • English Grammar
  • MCQ Questions

CBSE Tuts

CBSE Maths notes, CBSE physics notes, CBSE chemistry notes

Is ICl2- nonpolar or polar?

Is ICl2- nonpolar or polar?

Answer:
Nonpolar. Its dipoles all cancel.

Never really heard of \(\mathrm{ICl}_{2}^{-}\), but since it’s more probable than \(\mathrm{ICl}^{2-} \ldots\)

To draw the Lewis structure, each halogen contributes 7 valence electrons, and the charge contributes 1. So we have \(7+7+7+1=22\) valence electrons.

Hence, we can distribute 6 on each Cl and 2 per single bond for a total of \(6+6+2+2=16\) putting the remaining 6 on iodine.

The hypothetical VSEPR-predicted structure would look like this:
IMG
Since the electron geometry was trigonal bipyramidal (5 electron groups), the molecular geometry is triatomic linear.

Since the electron geometry was trigonal bipyramidal (5 electron groups), the molecular geometry is triatomic linear.

(Taking away atoms from a trigonal bipyramidal molecular geometry, you would get, in order, see-saw, T-shaped, triatomic linear, then diatomic linear.)

Since:

  • The molecule has two identical non-central atoms.
  • The structure is linear, giving dipoles that are opposite in direction to each other.
  • The three lone pairs of electrons are 120° away from each adjacent one, a rotationally-symmetric configuration; so, the lone-pair-bonding-pair repulsions sum to cancel out as well.

…it doesn’t matter what the electronegativity difference is between Cl and I; the dipoles all cancel out to give a net dipole moment of 0 in all directions.

Therefore, \(\mathrm{ICl}_{2}^{-}\) is projected to be nonpolar.

NOTE: Although iodine is less electronegative, it has to hold the 1 formal charge (but it would have a +1 oxidation state, while each Cl holds a −1 oxidation state and a 0 formal charge).

Since the only way to rework formal charges is to form a double bond using one of Cl’s lone pairs (giving a −2 formal charge to iodine and +1 to chlorine), it’s most favorable as it is now.

Primary Sidebar

NCERT Exemplar problems With Solutions CBSE Previous Year Questions with Solutoins CBSE Sample Papers

Recent Posts

  • MCQ Questions for Class 7 Science Chapter 7 Weather, Climate and Adaptations of Animals to Climate with Answers
  • MCQ Questions for Class 10 Economics Chapter 1 Development with Answers
  • CBSE Sample Papers for Class 9 English Language and Literature Paper 1
  • Chemical Reactions and Equations Class 10 Important Questions with Answers Science Chapter 1
  • MCQ Questions for Class 10 History Chapter 1 The Rise of Nationalism in Europe with Answers
  • MCQ Questions for Class 6 Science Chapter 1 Food Where Does It Come From with Answers
  • MCQ Questions for Class 7 Science Chapter 1 Nutrition in Plants with Answers
  • How do I know if a double displacement reaction occurs?
  • NCERT Class 9 Science Lab Manual – Relationship Between Weight of a Body and Force Required to Just Move it
  • How would you calculate the final temperature of the mixture assuming no heat is lost to the surroundings?
  • Pair of Linear Equations in Two Variables Class 10 Maths CBSE Important Questions with Solutions
  • Factors and Multiples
  • Selina Concise Mathematics Class 7 ICSE Solutions Chapter 8 Percent and Percentage
  • NCERT Exemplar Problems Class 9 Science – Work and Energy
  • NEET Chemistry Notes Chemical Equilibrium-Salt Hydrolysis

Footer

Maths NCERT Solutions

NCERT Solutions for Class 12 Maths
NCERT Solutions for Class 11 Maths
NCERT Solutions for Class 10 Maths
NCERT Solutions for Class 9 Maths
NCERT Solutions for Class 8 Maths
NCERT Solutions for Class 7 Maths
NCERT Solutions for Class 6 Maths

SCIENCE NCERT SOLUTIONS

NCERT Solutions for Class 12 Physics
NCERT Solutions for Class 12 Chemistry
NCERT Solutions for Class 11 Physics
NCERT Solutions for Class 11 Chemistry
NCERT Solutions for Class 10 Science
NCERT Solutions for Class 9 Science
NCERT Solutions for Class 7 Science
MCQ Questions NCERT Solutions
CBSE Sample Papers
cbse ncert
NCERT Exemplar Solutions LCM and GCF Calculator
TS Grewal Accountancy Class 12 Solutions
TS Grewal Accountancy Class 11 Solutions