If you are looking for NCERT Science Class 10 Chapter 5 Activity solutions, then you are in the right place. In this post, you will find NCERT Activity 5.4 Class 10 Science Explanation with conclusion.
NCERT Activity 5.4 Class 10 Science Explanation with conclusion
You are
suggested to study NCERT activity 5.4 class 10 science explanation with
conclusion so that you can attempt questions based on the activity 5.4 class 10
science.
Class 10 Science Chapter 5 Periodic Classification of Elements
Activity 5.4 Class 10 Science
· Look at group 1 of the Modern Periodic Table and name the elements present in it.
· Write down the electronic configuration of the first three elements of group 1.
· What similarities do you find in the electronic configurations?
· How many valence electrons are present in these elements?
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Discussion
· The elements present in group I are: hydrogen(H), lithium(Li), sodium(Na), potassium(K), rubidium(Rb), cesium(Cs) and francium(Fr).
· Electronic configuration of the first three elements are:
|
Elements |
Atomic number |
K |
L |
M |
|
Hydrogen (H) |
1 |
1 |
|
|
|
Lithium (Li) |
3 |
2 |
1 |
|
|
Sodium (Na) |
11 |
2 |
8 |
1 |
· These three elements have one electron in their respective valence shells.
· These elements have one valence electron.
Related Topics for You
1. Next Activity - Activity 5.5 Class 10 Science
2. Previous Activity- Activity 5.3 Class 10 Science
3. NCERT Solutions of Class 10 Science Chapter 5
5. Solutions of Class 10 Science all chapters
5. Extra Questions of Chapter 5
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