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⚫ Q. Find the valency and confrigration up-to Atomic number 20.
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Answers
Answered by
4
Hi friend
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Your answer
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Electronic configuration and valency of elements upto atomic number 20 : -
1. Hydrogen.=> Electronic configuration - 1 , valency = 1
2. Helium => Electronic configuration - 2 , valency = 0 [Noble gas]
3. Lithium => Electronic configuration - 2,1 , valency = 1
4. Beryllium => Electronic configuration - 2,2 . Valency = 2
5. Boron => Electronic configuration - 2,3 Valency = 3
6. Carbon => Electronic configuration - 2,4 . Valency = 4
7. Nitrogen => Electronic configuration - 2,5 Valency = (8 - 5) = 3
8. Oxygen => Electronic configuration - 2,6 . Valency = (8 - 6) = 2
9. Flourine => Electronic configuration - 2,7. Valency = (8 - 7) = 1
10. Neon => Electronic configuration - 2,8. Valency = 0 [Noble gas]
11. Sodium => Electric configuration - 2,8,1. Valency = 1
12. Magnesium => Electronic configuration - 2,8,2 . Valency = 2
13. Aluminium => Electronic configuration - 2,8,3. Valency = 3
14. Silicon => Electronic configuration - 2,8,4. Valency = 4
15. Phosphorus => Electronic configuration - 2,8,5. Valency = 3 or 5
16. Sulphur => Electronic configuration - 2,8,6 . Valency = (8 - 6) = 2
17. Chlorine => Electronic configuration => 2,8,7. Valency = (8 - 7) = 1
18. Argon => Electronic configuration => 2,8,8. Valency = 0 [Noble gas]
19. Pottasium => Electronic configuration => 2,8,8,1. Valency = 1
20. Calcium => Electronic configuration => 2,8,8,2. Valency = 2
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Your answer
---------------------
Electronic configuration and valency of elements upto atomic number 20 : -
1. Hydrogen.=> Electronic configuration - 1 , valency = 1
2. Helium => Electronic configuration - 2 , valency = 0 [Noble gas]
3. Lithium => Electronic configuration - 2,1 , valency = 1
4. Beryllium => Electronic configuration - 2,2 . Valency = 2
5. Boron => Electronic configuration - 2,3 Valency = 3
6. Carbon => Electronic configuration - 2,4 . Valency = 4
7. Nitrogen => Electronic configuration - 2,5 Valency = (8 - 5) = 3
8. Oxygen => Electronic configuration - 2,6 . Valency = (8 - 6) = 2
9. Flourine => Electronic configuration - 2,7. Valency = (8 - 7) = 1
10. Neon => Electronic configuration - 2,8. Valency = 0 [Noble gas]
11. Sodium => Electric configuration - 2,8,1. Valency = 1
12. Magnesium => Electronic configuration - 2,8,2 . Valency = 2
13. Aluminium => Electronic configuration - 2,8,3. Valency = 3
14. Silicon => Electronic configuration - 2,8,4. Valency = 4
15. Phosphorus => Electronic configuration - 2,8,5. Valency = 3 or 5
16. Sulphur => Electronic configuration - 2,8,6 . Valency = (8 - 6) = 2
17. Chlorine => Electronic configuration => 2,8,7. Valency = (8 - 7) = 1
18. Argon => Electronic configuration => 2,8,8. Valency = 0 [Noble gas]
19. Pottasium => Electronic configuration => 2,8,8,1. Valency = 1
20. Calcium => Electronic configuration => 2,8,8,2. Valency = 2
ArchitectSethRollins:
Thanks ^_^
Answered by
8
Atomic number valency Electronic configuration
1 1 1s(1)
2 0 1s(2)
3 1 1s(2), 2s(1)
4 2 1s(2), 2s(2)
5 3 1s(2), 2s(2), 2p(1)
6 4 1s(2), 2s(2), 2p(2)
7 3 1s(2), 2s(2), 2p(3)
8 2 1s(2), 2s(2), 2p(4)
9 1 1s(2), 2s(2), 2p(5)
10 0 1s(2), 2s(2), 2p(6)
11 1 1s(2), 2s(2), 2p(6), 3s(1)
12 2 1s(2), 2s(2), 2p(6), 3s(2)
13 3 1s(2), 2s(2), 2p(6), 3s(2), 3p(1)
14 4 1s(2), 2s(2), 2p(6), 3s(2), 3p(2)
15 3 1s(2), 2s(2), 2p(6), 3s(2), 3p(3)
16 2 1s(2), 2s(2), 2p(6), 3s(2), 3p(4)
17 1 1s(2), 2s(2), 2p(6), 3s(2), 3p(5)
18 0 1s(2), 2s(2), 2p(6), 3s(2), 3p(6)
19 1 1s(2), 2s(2), 2p(6), 3s(2), 3p(6), 4s(1)
20 2 1s(2), 2s(2), 2p(6), 3s(2), 3p(6), 4s(2)
Hope this helps you.
1 1 1s(1)
2 0 1s(2)
3 1 1s(2), 2s(1)
4 2 1s(2), 2s(2)
5 3 1s(2), 2s(2), 2p(1)
6 4 1s(2), 2s(2), 2p(2)
7 3 1s(2), 2s(2), 2p(3)
8 2 1s(2), 2s(2), 2p(4)
9 1 1s(2), 2s(2), 2p(5)
10 0 1s(2), 2s(2), 2p(6)
11 1 1s(2), 2s(2), 2p(6), 3s(1)
12 2 1s(2), 2s(2), 2p(6), 3s(2)
13 3 1s(2), 2s(2), 2p(6), 3s(2), 3p(1)
14 4 1s(2), 2s(2), 2p(6), 3s(2), 3p(2)
15 3 1s(2), 2s(2), 2p(6), 3s(2), 3p(3)
16 2 1s(2), 2s(2), 2p(6), 3s(2), 3p(4)
17 1 1s(2), 2s(2), 2p(6), 3s(2), 3p(5)
18 0 1s(2), 2s(2), 2p(6), 3s(2), 3p(6)
19 1 1s(2), 2s(2), 2p(6), 3s(2), 3p(6), 4s(1)
20 2 1s(2), 2s(2), 2p(6), 3s(2), 3p(6), 4s(2)
Hope this helps you.
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