Question

First 40 elements with atomic and
number, valency and
electronic configuration

Answer 1

Explanation: You can refer  to the table given below

Atomic no. Element Shorthand Electron Configuration Full Electron Configuration Electron shell arrangement

1 Electron configuration of Hydrogen (H) 1s1 1s1 1hydrogen electrons

2 Electron configuration of Helium (He) 1s2 1s2 2helium electrons

3 Electron configuration of Lithium (Li) [He] 2s1 1s2 2s1 2, 1lithium electrons

4 Electron configuration of Beryllium (Be) [He] 2s2 1s2 2s2 2, 2beryllium electrons

5 Electron configuration of Boron (B) [He] 2s2 2p1 1s2 2s2 2p1 2, 3boron electrons

6 Electron configuration of Carbon (C) [He] 2s2 2p2 1s2 2s2 2p2 2, 4carbon electrons

7 Electron configuration of Nitrogen (N) [He] 2s2 2p3 1s2 2s2 2p3 2, 5nitrogen electrons

8 Electron configuration of Oxygen (O) [He] 2s2 2p4 1s2 2s2 2p4 2, 6oxygen electrons

9 Electron configuration of Fluorine (F) [He] 2s2 2p5 1s2 2s2 2p5 2, 7fluorine electrons

10 Electron configuration of Neon (Ne) [He] 2s2 2p6 1s2 2s2 2p6 2, 8neon electrons

11 Electron configuration of Sodium (Na) [Ne] 3s1 1s2 2s2 2p6 3s1 2, 8, 1sodium electrons

12 Electron configuration of Magnesium (Mg) [Ne] 3s2 1s2 2s2 2p6 3s2 2, 8, 2magnesium electrons

13 Electron configuration of Aluminum (Al) [Ne] 3s2 3p1 1s2 2s2 2p6 3s2 3p1 2, 8, 3aluminium electrons

14 Electron configuration of Silicon (Si) [Ne] 3s2 3p2 1s2 2s2 2p6 3s2 3p2 2, 8, 4silicon electrons

15 Electron configuration of Phosphorus (P) [Ne] 3s2 3p3 1s2 2s2 2p6 3s2 3p3 2, 8, 5phosphorous electrons

16 Electron configuration of Sulfur (S) [Ne] 3s2 3p4 1s2 2s2 2p6 3s2 3p4 2, 8, 6sulfur electrons

17 Electron configuration of Chlorine (Cl) [Ne] 3s2 3p5 1s2 2s2 2p6 3s2 3p5 2, 8, 7chlorine electrons

18 Electron configuration of Argon (Ar) [Ne] 3s2 3p6 1s2 2s2 2p6 3s2 3p6 2, 8, 8argon electrons

19 Electron configuration of Potassium (K) [Ar] 4s1 1s2 2s2 2p6 3s2 3p6 4s1 2, 8, 8, 1potassium electrons

20 Electron configuration of Calcium (Ca) [Ar] 4s2 1s2 2s2 2p6 3s2 3p6 4s2 2, 8, 8, 2calcium electrons

21 Electron configuration of Scandium (Sc) [Ar] 3d1 4s2 1s2 2s2 2p6 3s2 3p6 3d1 4s2 2, 8, 9, 2scandium electrons

22 Electron configuration of Titanium (Ti) [Ar] 3d2 4s2 1s2 2s2 2p6 3s2 3p6 3d2 4s2 2, 8, 10, 2titanium electrons

23 Electron configuration of Vanadium (V) [Ar] 3d3 4s2 1s2 2s2 2p6 3s2 3p6 3d3 4s2 2, 8, 11, 2vanadium electrons

24 Electron configuration of Chromium (Cr) [Ar] 3d5 4s1 1s2 2s2 2p6 3s2 3p6 3d5 4s1 2, 8, 13, 1chromium electrons

25 Electron configuration of Manganese (Mn) [Ar] 3d5 4s2 1s2 2s2 2p6 3s2 3p6 3d5 4s2 2, 8, 13, 2manganese electrons

26 Electron configuration of Iron (Fe) [Ar] 3d6 4s2 1s2 2s2 2p6 3s2 3p6 3d6 4s2 2, 8, 14, 2iron electrons

27 Electron configuration of Cobalt (Co) [Ar] 3d7 4s2 1s2 2s2 2p6 3s2 3p6 3d7 4s2 2, 8, 15, 2cobalt electrons

28 Electron configuration of Nickel (Ni) [Ar] 3d8 4s2 1s2 2s2 2p6 3s2 3p6 3d8 4s2 2, 8, 16, 2nickel electrons

29 Electron configuration of Copper (Cu) [Ar] 3d10 4s1 1s2 2s2 2p6 3s2 3p6 3d10 4s1 2, 8, 18, 1copper electrons

30 Electron configuration of Zinc (Zn) [Ar] 3d10 4s2 1s2 2s2 2p6 3s2 3p6 3d10 4s2 2, 8, 18, 2zinc electrons

31 Electron configuration of Gallium (Ga) [Ar] 3d10 4s2 4p1 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p1 2, 8, 18, 3

32 Electron configuration of Germanium (Ge) [Ar] 3d10 4s2 4p2 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p2 2, 8, 18, 4

33 Electron configuration of Arsenic (As) [Ar] 3d10 4s2 4p3 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3 2, 8, 18, 5

34 Electron configuration of Selenium (Se) [Ar] 3d10 4s2 4p4 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4 2, 8, 18, 6

35 Electron configuration of Bromine (Br) [Ar] 3d10 4s2 4p5 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5 2, 8, 18, 7

36 Electron configuration of Krypton (Kr) [Ar] 3d10 4s2 4p6 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 2, 8, 18, 8

37 Electron configuration of Rubidium (Rb) [Kr] 5s1 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s1 2, 8, 18, 8, 1

38 Electron configuration of Strontium (Sr) [Kr] 5s2 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 2, 8, 18, 8, 2

39 Electron configuration of Yttrium (Y) [Kr] 4d1 5s2 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d1 5s2 2, 8, 18, 9, 2

40 Electron configuration of Zirconium (Zr) [Kr] 4d2 5s2 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d2 5s2 2, 8, 18, 10, 2