Elements 1-30ATOMIC NUMBER,ATOMIC MASS,AND VALENCY

Elements 1–30 with atomic mass, atomic number,and 

valency.

Related Topics:-

1. Element's 1 to 10 [with mnemonics]
2. Elements 12 to 20 [with mnemonics]
3. Elements 21 to 30 [with mnemonics]
4. Elements 31 to 40 [with mnemonics ]
5. Elements 41 to 50 [with mnemonics]
6. Elements 51 to 60 [with mnemonics ]