Explanation To determine: The electronic configuration of most stable ion of Aluminum (Al) . An element gain or lose electron to acquire the most stable state. The stable state is achieved by getting nearest noble gas electronic configuration. In noble gas electronic configuration the outer most sub shell is completely filled. At ground state the electronic configuration of Aluminum is: 1s 2 2s 2 2p 6 3s 2 3p 1 Aluminium can loose three electrons to get the nearest noble gas electronic configuration and form Al 3+ . Neon is the nearest noble gas hence, the electronic configuration of Al 3+ or Neon gas is 1s 2 2s 2 2p 6 . To determine: The electronic configuration of most stable ion of Barium (Ba) . An element gain or lose electron to acquire the most stable state. The stable state is achieved by getting nearest noble gas electronic configuration. In noble gas electronic configuration the outer most sub shell is completely filled. At ground state the electronic configuration of Barium is: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 5s 2 5p 6 6s 2 Barium can loose two electrons to get the nearest noble gas electronic configuration and form Ba 2+ . Xenon is the nearest noble gas hence, the electronic configuration of Ba 2+ or Xenon gas is: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 5s 2 5p 6 To determine: The electronic configuration of most stable ion of Selenium (Se) . An element gain or lose electron to acquire the most stable state. The stable state is achieved by getting nearest noble gas electronic configuration

10th Edition

ISBN: 8220103600606

Author: ZUMDAHL

Publisher: CENGAGE L

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Actinides

The elements in which the extra electron tends to enter the 5f-orbitals of (n–2)th main shell are considered 5f-block elements. They are also named actinides. Actinides include 15 elements, from atomic number 89 to 103.

Question

Chapter 8, Problem 45E

Interpretation Introduction

Interpretation: The electronic configuration of most stable ion of elements Al,Ba,Se and I is to be evaluated.

Concept introduction: An element can said to be stable if its outer most sub shell is half filled or completely filled.

To determine: The electronic configuration of most stable ion of Al,Ba,Se and I

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Chapter 8 Solutions

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Solution Summary: The author evaluates the electronic configuration of the most stable ion of elements Al,

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Chapter 8 Solutions