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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Polarizability is defined as the extent to which the electron cloud surrounding an atom or molecule can be distorted by an external charge. Rank the halogens (F2, Cl2, Br2, I2) and the noble gases (He, Ne, Ar, Kr, Xe) in order of polarizability (from least polarizable to most polarizable). What characteristics of these substances could be used to determine this ranked order?

Interpretation Introduction

Interpretation:

The halogen and noble gases has to be ranked based on their polarizability.

Concept Introduction:

  • Polarizability is the ease with which the electron cloud can be distorted.
  • Larger molecules are often more polarizable as they have large number of less tightly held electrons, magnitude of the resulting partial charge is large and also due to large electron cloud.
Explanation
HalogenBoiling pointMolar massNoble gasesBoiling pointMolar mass
F285.03K37.9g/molHe4.21K4 g/mol
Cl2239.11K70.90 g/molNe27.1K20.179 g/mol
Br2332K159.80 g/molAr87

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