Worksheets

Worksheet # 2

Name : ……………………………………………………….                                        Classroom exercise worksheet.

Do You Know How To Subtract??

Then you know How to Write an Electron Configuration!

Below is given the name of the element and its corresponding atomic number Z. Using the Atomic number Z, write the electron configuration for each of the following elements by the subtraction method. After writing the electron configuration, deduce the number of valence electrons of the corresponding atom.

Oxygen Z= 8
Iron Z= 26
Zinc Z=30
Bromine Z= 35
Tin Z=50
Barium Z= 56
Platinium Z=78

Worksheet # 1

Name : ……………………………………………………………….                               Homework exercise worksheet

Practice!

Below is given the name of the element and its corresponding atomic number Z. Using the Atomic number Z, write the electron configuration for each of the following elements by the subtraction method. After writing the electron configuration, deduce the number of valence electrons of the corresponding atom.

Hydrogen Z= 1
Fluorine Z=9
Magnesium Z=12
Sulfur Z= 15
Magnate Z= 25
Platinum Z= 46
Cesium Z=55
Lead Z= 82