Write the electronic configuration of 30 elements and valency also. .
Answers
Element Atomic Number Atomic Mass Valency
Hydrogen 1 1.0079 (-1), +1
Helium 2 4.0026 0
Lithium 3 6.941 +1
Beryllium 4 9.0122 +2
Boron 5 10.811 -3, +3
Carbon 6 12.0107 (+2), +4
Nitrogen 7 14.0067 -3, -2, -1, (+1), +2, +3, +4, +5
Oxygen 8 15.9994 -2
Fluorine 9 18.9984 -1, (+1)
Neon 10 20.1797 0
Sodium 11 22.9897 +1
Magnesium 12 24.305 +2
Aluminum 13 26.9815 +3
Silicon 14 28.0855 -4, (+2), +4
Phosphorus 15 30.9738 - 3, +1, +3, +5
Sulfur 16 32.065 -2, +2, +4, +6
Chlorine 17 35.453 -1, +1, (+2), +3, (+4), +5, +7
Argon 18 39.0983 0
Potassium 19 39.948 +1
Calcium 20 40.078 +2
Scandium 21 44.9559 +3
Titanium 22 47.867 +2, +3, +4
Vanadium 23 50.9415 +2, +3, +4, +5
Chromium 24 51.9961 +2, +3, +6
Manganese 25 54.938 +2, (+3), +4, (+6), +7
Iron 26 55.845 +2, +3, (+4), (+6)
Nickel 27 58.6934 +2, +3, (+4)
Cobalt 28 58.9332 (+1), +2, (+3), (+4)
Copper 29 63.546 +1, +2, (+3)
Zinc 30 65.39 +2
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
