Question

What is the valency of first 30 elements in periodic table?

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) Aluminium(Al)
Atomic Number: 13
Valency = 3

14) Silicon(Si)
Atomic Number: 14
Valency = 4

15) Phosphorus(P)
Atomic Number: 15
Valency = 5 , 3

16) Sulphur(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

21) Scandium (Sc)
Atomic Number: 21
Valency = 3

22) Titanium (Ti)
Atomic Number: 22
Valency = 4

23) Vanadium (V)
Atomic Number: 23
Valency = 5 , 4 

24) Chromium (Cr)
Atomic Number: 24
Valency = 2



25)Manganese(Mn)

Atomic Number: 25
Valency = 7 , 4 , 2

26)Iron (Fe)
Atomic Number: 26
Valency = 2 , 3

27) Cobalt (Co)
Atomic Number: 27
Valency = 3 , 2

28)Nickel (Ni)
Atomic Number: 28
Valency = 2

29)Copper (Cu)
Atomic Number: 29
Valency = 2 , 1

30)Zinc(Zn)
Atomic Number: 30
Valency = 2

Answer 2

Hello dear friend,

H (Hydrogen)1He (Helium)0Li (Lithium)1Be (Beryllium)2B (Boron)3C (Carbon)4N (Nitrogen)1O (Oxygen)2F (Fluorine)1Ne (Neon)0Na (Sodium)1Mg (Magnesium)2Al (aluminum)3Si (silicon)4P (Phosphorous)5S (Sulfur)4,6Cl (Chlorine)-1Ar ( Argon)0K (Potassium)1Ca (Calcite)2Sc (Scandium)3Ti (Titanium)4V (Vanadium)5Cr (Chromium)3Mn (Manganese)2,4Fe (Iron)2,3Co (Cobalt)2Ni (Nickel)2Cu (Copper)1,2Zn (Zinc)2

Hope this helps!! thankyou & goodluck!!  :)