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Write the Names and Symbols of the First Twenty Elements that You Have Studied in Class Vi and Vii. - Chemistry

Write the names and symbols of the first twenty elements that you have studied in class VI & VII.

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Solution

Name of the elements  Symbol Valency
1. Hydrogen H 1
2. Helium He 0
3. Lithium Li 1
4. Beryllium Be 2
5. Boron B 3
6. Carbon C 4
7. Nitrogen
8. Oxygen O 2
9. Fluorine F 1
10. Neon Ne 0
11. Sodium Na 1
12.Magnesium Mg 2
13. Aluminium AI 3
14. Silicon  Si 4
15.Phosphorus P 3
16. Sulphur S 2
17.Chlorine CI 1
18.Argon Ar 0
19. Potassium K 1
20. Calcium Ca 2
Concept: Symbols of Elements
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