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Introductory Chemistry: A Foundati...

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

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Section
BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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Write the full electron configuration ( 1 s 3 2 s 2 , etc . ) for each of the following elements.

phosphorus, Z = 15

calcium, Z = 2 0

potassium, Z = 19

boron, Z = 5

(a)
Interpretation Introduction

Interpretation:

The complete electronic configuration of phosphorus should be written.

Concept Introduction:

In an atom; electrons are placed in certain energy levels which are called as orbitals. Electrons always fill according to energy of these orbitals. The sequence of energy levels with respective electrons is called as electronic configuration.

Explanation

The energy of orbitals increases with the number of principal energy levels. The electronic configuration sequence of orbitals is below:

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s

We have to follow this sequence to write the electronic configuration of elements. Each orbital will accommodate a certain number of electrons.

  • s-orbital = 2 electrons...
(b)
Interpretation Introduction

Interpretation:

The complete electronic configuration of calcium should be written.

Concept Introduction:

In an atom; electrons are placed in certain energy levels which are called as orbitals. Electrons always fill according to energy of these orbitals. The sequence of energy levels with respective electrons is called as electronic configuration.

(c)
Interpretation Introduction

Interpretation:

The complete electronic configuration of potassium should be written.

Concept Introduction:

In an atom; electrons are placed in certain energy levels which are called as orbitals. Electrons always fill according to energy of these orbitals. The sequence of energy levels with respective electrons is called as electronic configuration.

(d)
Interpretation Introduction

Interpretation:

The complete electronic configuration of boron should be written.

Concept Introduction:

In an atom; electrons are placed in certain energy levels which are called as orbitals. Electrons always fill according to energy of these orbitals. The sequence of energy levels with respective electrons is called as electronic configuration.

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