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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

Give the electron configuration for each of the following ions, and tell whether each is paramagnetic or diamagnetic.

(a) Cr3+

(b) V2+

(c) Ni2+

(d) Cu+

(a)

Interpretation Introduction

Interpretation:

The electronic configuration of Cr3+ ion and the magnetic property of the ion have to be identified.

Concept introduction:

The electron configuration tells us in which orbitals the electrons for an element are located. Three rules are,

  • Electrons fill orbitals staring with lowest n and moving upwards(Aufbau principle)
  • No two electrons can fill one orbital with the same spin(Pauli Exclusion Principle)
  • For orbitals within the same subshell, the electrons fill each orbital singly before any orbital gets a second electron (Hund’s rule).

Para magnetism refers to the magnetic state of an atom with one or more unpaired electrons.

Diamagnetism has no unpaired electrons (electrons are paired).

Explanation

The electronic configuration of chromium is 1s22s22p63s23p63d54s1. The electronic configuration of Cr3+ is

(b)

Interpretation Introduction

Interpretation:

The electronic configuration of V2+ ion and the magnetic property of the ion has to be identified.

Concept introduction:

The electron configuration tells us in which orbitals the electrons for an element are located. Three rules are,

  • Electrons fill orbitals staring with lowest n and moving upwards(Aufbau principle)
  • No two electrons can fill one orbital with the same spin(Pauli Exclusion Principle)
  • For orbitals within the same subshell, the electrons fill each orbital singly before any orbital gets a second electron (Hund’s rule).

Para magnetism refers to the magnetic state of an atom with one or more unpaired electrons.

Diamagnetism has no unpaired electrons (electrons are paired).

(c)

Interpretation Introduction

Interpretation:

The electronic configuration of Ni2+ ion and the magnetic property of the ion has be identified.

Concept introduction:

The electron configuration tells us in which orbitals the electrons for an element are located. Three rules are,

  • Electrons fill orbitals staring with lowest n and moving upwards(Aufbau principle)
  • No two electrons can fill one orbital with the same spin(Pauli Exclusion Principle)
  • For orbitals within the same subshell, the electrons fill each orbital singly before any orbital gets a second electron (Hund’s rule).

Para magnetism refers to the magnetic state of an atom with one or more unpaired electrons.

Diamagnetism has no unpaired electrons (electrons are paired).

(d)

Interpretation Introduction

Interpretation:

The electronic configuration of Cr3+ ion and the magnetic property of the ion has to be identified.

Concept introduction:

The electron configuration tells us in which orbitals the electrons for an element are located. Three rules are,

  • Electrons fill orbitals staring with lowest n and moving upwards(Aufbau principle)
  • No two electrons can fill one orbital with the same spin(Pauli Exclusion Principle)
  • For orbitals within the same subshell, the electrons fill each orbital singly before any orbital gets a second electron (Hund’s rule).

Para magnetism refers to the magnetic state of an atom with one or more unpaired electrons.

Diamagnetism has no unpaired electrons (electrons are paired).

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