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Transcript of Slide 1 of 20 © Copyright Pearson Prentice Hall Electron Arrangement in Atoms > The Development of...
Slide 1 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
> The Development of Atomic Models
The timeline shoes the development of atomic models from 1803 to 1911.
5.1
Slide 2 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
> The Development of Atomic Models
The timeline shows the development of atomic models from 1913 to 1932.
5.1
Slide 3 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
> Atomic Orbitals
Different atomic orbitals are denoted by letters. The s orbitals are spherical, and p orbitals are dumbbell-shaped.
5.1
Four of the five d orbitals have the same shape but different orientations in space.
Slide 4 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
> Electron Configurations
The ways in which electrons are arranged in various
orbitals around the nuclei of atoms are called
__________________ configurations.
Three rules—
the _____________ principle,
the _________ ____________
principle, and ____________ rule.
5.2
Slide 5 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
> Electron Configurations
Aufbau Principle
According to the ____________ principle,
electrons occupy the orbitals of
_____________ energy _______________.
In the aufbau diagram below, each box
represents an atomic orbital.
5.2
Slide 6 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
>
Slide 7 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
> Electron Configurations
Pauli Exclusion Principle
According to the __________
_____________ principle, an atomic orbital
may describe at most _________ electrons.
To occupy the same orbital, two electrons
must have ___________ spins; that is, the
electron spins must be _____________.
5.2
Slide 8 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
> Electron Configurations
Hund’s Rule
______________ rule states that electrons
occupy orbitals of the same
_______________ in a way that makes the
number of electrons with the __________
____________ direction as ______________
as possible.
5.2
Slide 9 of 20
© Copyright Pearson Prentice Hall
Electron Arrangement in Atoms
> Electron Configurations
Orbital Filling Diagram
5.2
© Copyright Pearson Prentice Hall
Slide 10 of 20
© Copyright Pearson Prentice Hall
Slide 11 of 20
Practice Problems for Conceptual Problem 1.1
8. Write the electron configuration for each atom.a. carbon b. argon c. nickel
© Copyright Pearson Prentice Hall
Slide 12 of 20
Practice Problems for Conceptual Problem 1.1
Problem Solving 5.9 Solve Problem 9 with the help of an interactive guided tutorial.