Ch 221 Chapter Six Part Ii Concept Guide With Answers printable pdf download

Ch 221 Chapter Six Part Ii Concept Guide With Answers

CH 221 Chapter Six Part II Concept Guide

1. Writing Electron Configurations

Question

What is the complete electron configuration of the zirconium atom?

Approach

With increasing atomic number, electrons occupy the subshells available in each main energy level in order,

with few exceptions:

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

Solution:

Forty electrons must be accommodated. The total electron configuration for Zr is:

This configuration may also be written as:

2. Writing Electron Configurations

Question

What is the complete electron configuration for the arsenic atom?

Approach

With increasing atomic number, electrons occupy the subshells available in each main energy level in order,

with few exceptions:

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

Solution:

Thirty-three electrons must be accommodated. The total electron configuration for As is:

This configuration may also be written as:

3. Writing Electron Configurations

Question

What is the noble gas notation for the electron configuration for the rubidium atom?

Approach

With increasing atomic number, electrons occupy the subshells available in each main energy level in specific

order, with few exceptions:

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

The noble gas notation substitutes the symbol of the noble gas for the corresponding noble gas core in the

electron configuration.

Page V-6b-1 / Chapter Six Part Two Concept Guide

Ch 221 Chapter Six Part Ii Concept Guide With Answers