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science 3rd period
Periodic Table (Elements)
Question | Answer |
---|---|
1. Hydrogn 2. Helium 3. Lithium 4. Beryllium 5. Boron | 1.H 2.He 3.Li 4.Be 5.B |
6. Carbon 7. Nitrogen 8.Oxyen 9. Florine 10.Neon | 6.C 7.N 8.O 9.F 10.Ne |
11. | |