Chemistry, asked by sravanmathew8375, 10 months ago

Atomic number and electronic configuration of first 20 elements velancy

Answers

Answered by SyedNomanShah
6

Answer:

Number Element Valence

1 Hydrogen (-1), +1

2 Helium 0

3 Lithium +1

4 Beryllium +2

5 Boron -3, +3

6 Carbon (+2), +4

7 Nitrogen -3, -2, -1, (+1), +2, +3, +4, +5

8 Oxygen -2

9 Fluorine -1, (+1)

10 Neon 0

11 Sodium +1

12 Magnesium +2

13 Aluminum +3

14 Silicon -4, (+2), +4

15 Phosphorus -3, +1, +3, +5

16 Sulfur -2, +2, +4, +6

17 Chlorine -1, +1, (+2), +3, (+4), +5, +7

18 Argon 0

19 Potassium +1

20 Calcium +2

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Answered by srkplastics
1

Answer:

atomic number

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20

valency

  1. 2
  2. 2,1
  3. 2,2
  4. 2,4
  5. 2,5
  6. 2,6
  7. 2,7
  8. 2,8
  9. 2,8,1
  10. 2,8,2
  11. 2,8,3
  12. 2,8,4
  13. 2,8,5
  14. 2,8,6
  15. 2,8,7
  16. 2,8,8
  17. 2,8,8,1
  18. 2,8,8,2
  19. 2,8,8,3
  20. 2,8,8,4

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