CBSE Class 9 Answered
atomic number
Asked by | 17 Sep, 2008, 10:07: PM
Expert Answer
1 Hydrogen
2 Helium
3 Lithium
4 Beryllium
5 Boron
6 Carbon
7 Nitrogen
8 Oxygen
9 Fluorine
10 Neon
11 Sodium
12 Magnesium
13 Aluminium
14 Silico
15 Phosphorus
16 Sulfur
17 Chlorine
18 Argon
19 Potassium
20 Calcium
Answered by | 18 Sep, 2008, 08:02: AM
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