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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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Using the symbol of the previous noble gas to indicate the core electrons, write the electron configuration for each of the following elements.

scandium. Z = 21 c. lanthanum, =  57

yttrium. Z = 39 d. actinium, Z = 89

Interpretation Introduction

(a)

Interpretation:

The electronic configuration of the given element by using the symbol of the previous noble gas is to be stated.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electronic configuration. The description of every electron that is moving freely in an orbital is given by the electronic configuration of that atom.

Explanation

The electronic configuration of scandium that has atomic number equals to Z=21 is shown as,

[Ar]3d14s2

This electronic configuration is shown by using the symbol of the noble gas, argon [Ar], which has atomic number equal to 18

Interpretation Introduction

(b)

Interpretation:

The electronic configuration of the given element by using the symbol of the previous noble gas is to be stated.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electronic configuration. The description of every electron that is moving freely in an orbital is given by the electronic configuration of that atom.

Interpretation Introduction

(c)

Interpretation:

The electronic configuration of the given element by using the symbol of the previous noble gas is to be stated.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electronic configuration. The description of every electron that is moving freely in an orbital is given by the electronic configuration of that atom.

Interpretation Introduction

(d)

Interpretation:

The electronic configuration of the given element by using the symbol of the previous noble gas is to be stated.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electronic configuration. The description of every electron that is moving freely in an orbital is given by the electronic configuration of that atom.

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