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Electronic configuration of First 20 elements.?
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Electronic configuration of First 20 elements.?
Electronic Configuration of First 20 Elements

Introduction

The electronic configuration of an element is the arrangement of electrons in its atomic or molecular orbitals. The electronic configuration of the first 20 elements is important to understand the periodic trends and properties of elements.

Electronic Configuration of First 20 Elements


  1. Hydrogen: 1s1

  2. Helium: 1s2

  3. Lithium: 1s2 2s1

  4. Beryllium: 1s2 2s2

  5. Boron: 1s2 2s2 2p1

  6. Carbon: 1s2 2s2 2p2

  7. Nitrogen: 1s2 2s2 2p3

  8. Oxygen: 1s2 2s2 2p4

  9. Fluorine: 1s2 2s2 2p5

  10. Neon: 1s2 2s2 2p6

  11. Sodium: 1s2 2s2 2p6 3s1

  12. Magnesium: 1s2 2s2 2p6 3s2

  13. Aluminum: 1s2 2s2 2p6 3s2 3p1

  14. Silicon: 1s2 2s2 2p6 3s2 3p2

  15. Phosphorus: 1s2 2s2 2p6 3s2 3p3

  16. Sulfur: 1s2
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Electronic configuration of First 20 elements.?
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