Question

find out the valency of 1 to 20 elements with help of atomic structure for 7st ​

Answer 1

Answer:

1. Hydrogen (H) = 1.
2. Hydrogen (H) = 1.Helium (He) = 0.
3. Hydrogen (H) = 1.Helium (He) = 0.Lithium (Li) = 1.
4. Hydrogen (H) = 1.Helium (He) = 0.Lithium (Li) = 1.Beryllium (Be) = 2.
5. Hydrogen (H) = 1.Helium (He) = 0.Lithium (Li) = 1.Beryllium (Be) = 2.Boron (B) = 3.
6. Hydrogen (H) = 1.Helium (He) = 0.Lithium (Li) = 1.Beryllium (Be) = 2.Boron (B) = 3.Carbon (C) = 4.
7. Hydrogen (H) = 1.Helium (He) = 0.Lithium (Li) = 1.Beryllium (Be) = 2.Boron (B) = 3.Carbon (C) = 4.Nitrogen (N) = 3.
8. Hydrogen (H) = 1.Helium (He) = 0.Lithium (Li) = 1.Beryllium (Be) = 2.Boron (B) = 3.Carbon (C) = 4.Nitrogen (N) = 3.Oxygen (O) = 2.

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