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CBSE Class 9 Answered

valency
Asked by | 17 Sep, 2008, 10:12: PM
answered-by-expert Expert Answer

z     element name,    atomic mass.

1     Hydrogen          1.00794
2     Helium          4.002602
3     Lithium         6.941
4     Beryllium         9.012182
5     Boron          10.811
6     Carbon         12.0107
7     Nitrogen          14.0067
8     Oxygen           15.9994
9     Fluorine          18.9984032
10     Neon          20.1797
11     Sodium          22.98976928
12     Magnesium      24.3050
13     Aluminium      26.9815386
14     Silicon          28.0855
15     Phosphorus      30.973762

Answered by | 18 Sep, 2008, 08:06: AM

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