Question

write the first 20 elements with the atomic number, no of protons, no of electrons ​

Answer 1

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Answer 2

Answer:

Element Atomic number Proton. Electro

Hydrogen 1. 1 proton. 1 electron

Helium 2. 2 protons 2 electrons

Lithium 3. 3 protons, 3 electrons

Beryllium. 4. 4 protons, 4 electrons

Boron 5. 5 protons, 5 electrons

Carbon 6. 6 protons, 6 electrons

Nitrogen 7. 7protons, 7electrons

Oxygen 8. 8protons, 8electrons

Fluorine 9. 9 protons, 9electrons

Neon 10. 10 protons, 10electrons

Sodium 11. 11 protons, 11electrons

Magnesium 12. 12protons, 12 electrons

Aluminium 13. 13 protons, 13 electrons

Silicon 14. 14protons, 14 electrons

Phosphorus 15. 15protons, 15 electrons

Sulfur 16. 16protons, 16electrons

Chlorine. 17. 17protons, 17 electrons

Argon 18. 18 protons, 18 electrons

Potassium 19. 19protons, 19 electrons

Calcium. 20. 20protons, 20 electrons

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