   Chapter 22, Problem 10PS

Chapter
Section
Textbook Problem

Identify two transition metal cations with each of the following electron configurations.(a) [Ar]3d6(b) [Ar]3d10(c) [Ar]3d5(d) [Ar]3d8

(a)

Interpretation Introduction

Interpretation:

The two transition metal cation with each of the given electronic configuration 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).
Explanation

The electronic configuration of iron is [Ar] 3d64s2. The electronic configuration of Fe2+ is [Ar] 3d6

(b)

Interpretation Introduction

Interpretation:

The two transition metal cation with each of the given electronic configuration 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).

(c)

Interpretation Introduction

Interpretation:

The two transition metal cation with each of the given electronic configuration 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).

(d)

Interpretation Introduction

Interpretation:

The two transition metal cation with each of the given electronic configuration 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).

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