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
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