Question

symbols of elements with their valencies

Answer 1

1) Hydrogen (H)

Atomic Number -- 1
Valency -- 1

2) Helium (He)

Atomic Number --2
Valency -- 0

3) Lithium (Le)

Atomic Number -- 3
Valency -- 1

4) Beryllium (Be)

Atomic Number -- 4
Valency -- 2

5) Boron (B)

Atomic Number-- 5
Valency -- 3

6)Carbon(C)
Atomic Number: 6
Valency = 4

7) Nitrogen (N)

Atomic Number --7
Valency --  3

8) Oxygen (O)

Atomic Number --8
Valency --2

9) Fluorine (F)

Atomic Number -- 9
Valency  --1

10) Neon (Ne)

Atomic Number -- 10
Valency -- 0

11)Sodium (Na)

Atomic Number --11
Valency -- 1

12) Magnesium (Mg)

Atomic Number -- 12
Valency -- 2

13) Aluminum (Al)

Atomic Number -- 13
Valency -- 3

14) Silicon (Si)

Atomic Number -- 14
Valency -- 4

15) Phosphorus (P)

Atomic Number -- 15
Valency -- 5 , 3

16) Sulfur (S)

Atomic Number -- 16
Valency -- 2

17) Chlorine (Cl)

Atomic Number -- 17
Valency -- 1

18) Argon (Ar)

Atomic Number -- 18
Valency -- 0

19) Potassium (K)

Atomic Number --19
Valency -- 1

20) Calcium (Ca)

Atomic Number -- 20
Valency -- 2


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Answer 2

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Valency of First 30 Elements

Element Atomic Number Valency

Valency of Hydrogen 1 1

Valency of Helium 2 0

Valency of Lithium 3 1

Valency of Beryllium 4 2