Chemistry, asked by udaya6847, 2 months ago

what is the general electronic configuration of first group elements​

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Answered by sneham211117
2

Answer:

Atomic Number Name of the Element Electronic Configuration

1 Hydrogen (H) 1s1

2 Helium (He) 1s2

3 Lithium (Li) [He] 2s1

4 Beryllium (Be) [He] 2s2

5 Boron (B) [He] 2s2 2p1

6 Carbon (C) [He] 2s2 2p2

7 Nitrogen (N) [He] 2s2 2p3

8 Oxygen (O) [He] 2s2 2p4

9 Fluorine (F) [He] 2s2 2p5

10 Neon (Ne) [He] 2s2 2p6

11 Sodium (Na) [Ne] 3s1

12 Magnesium (Mg) [Ne] 3s2

13 Aluminium (Al) [Ne] 3s2 3p1

14 Silicon (Si) [Ne] 3s2 3p2

15 Phosphorus (P) [Ne] 3s2 3p3

16 Sulphur (S) [Ne] 3s2 3p4

17 Chlorine (Cl) [Ne] 3s2 3p5

18 Argon (Ar) [Ne] 3s2 3p6

19 Potassium (K) [Ar] 4s1

20 Calcium (Ca) [Ar] 4s2

21 Scandium (Sc) [Ar] 3d1 4s2

22 Titanium (Ti) [Ar] 3d2 4s2

23 Vanadium (V) [Ar] 3d3 4s2

24 Chromium (Cr) [Ar] 3d5 4s1

25 Manganese (Mn) [Ar] 3d5 4s2

26 Iron (Fe) [Ar] 3d6 4s2

27 Cobalt (Co) [Ar] 3d7 4s2

28 Nickel (Ni) [Ar] 3d8 4s2

29 Copper (Cu) [Ar] 3d10 4s1

30 Zinc (Zn) [Ar] 3d10 4s2

The electronic configuration of first 30 elements with atomic numbers listed above corresponds to the ground state of the specific elements. Any configuration that does not correspond to the lowest energy state is called an excited state.

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