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The electron configuration of  elements of the Periodic Table (except for the 4f, 5d, 5f and 6d blocks)

ONLY the s-block, p-block, and the first two transition metal series, the 3d-block and 4d-block elements are shown

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Pd s block 3d/4d blocks of Transition Metals (Periods 4/5), the 1st and 10th are NOT true transition elements, they have no partially filled d shell in an ion (old/new group notation on right). p block elements
Gp1 Gp2 Gp3/13 Gp4/14 Gp5/15 Gp6/16 Gp7/17 Gp0/18
1

[1H] (hydrogen does not really fit into any group)

 2He 1s2
2 3Li [He]2s1 4Be [He]2s2 The electronic structure of Elements 1 to 56, ZSymbol, Z = atomic or proton number = total electrons in neutral atom, [He] = 1s2, [Ne] = 1s22s22p6, [Ar] = 1s22s22p63s23p6

[Kr] = 1s22s22p63s23p63d104s24p6

Between Groups 2 and 3/13 are the d–blocks and f–blocks where the quantum energy level rules permit their inclusion. Periods 4 and 5 have 18 elements each, including the 3d (Sc-Zn) and 4d (Y-Cd) d blocks of elements respectively (Groups 3 to 12 – new notation).

 5B [He]2s22p1 6C [He]2s22p2 7N [He]2s22p3 8O [He]2s22p4 9F [He]2s22p5 10Ne [He]2s22p6
3 11Na [Ne]3s1 12Mg [Ne]3s2 13Al [Ne]3s23p1 14Si [Ne]3s23p2 15P [Ne]3s23p3 16S [Ne]3s23p4 17Cl [Ne]3s23p5 18Ar [Ne]3s23p6
4 19K [Ar]4s1 20Ca [Ar]4s2 21Sc [Ar] 3d14s2 22Ti [Ar] 3d24s2 23V [Ar] 3d34s2 24Cr [Ar] 3d54s1 25Mn [Ar] 3d54s2 26Fe [Ar] 3d64s2 27Co [Ar] 3d74s2 28Ni [Ar] 3d84s2 29Cu [Ar] 3d104s1 30Zn [Ar] 3d104s2 31Ga [Ar] 3d104s24p1 32Ge [Ar] 3d104s24p2 33As [Ar] 3d104s24p3 34Se [Ar] 3d104s24p4 35Br [Ar] 3d104s24p5 36Kr [Ar] 3d104s24p6
5 37Rb [Kr]5s1 38Sr [Kr]5s2 39Y [Kr] 4d15s2 40Zr [Kr] 4d25s2 41Nb [Kr] 4d45s1 42Mo [Kr] 4d55s1 43Tc [Kr] 4d55s2 44Ru [Kr] 4d75s1 45Rh [Kr] 4d85s1 46Pd [Kr] 4d10 47Ag [Kr] 4d105s1 48Cd [Kr] 4d105s2 49In [Kr] 4d105s25p1 50Sn [Kr] 4d105s25p2 51Sb [Kr] 4d105s25p3 52Te [Kr] 4d105s25p4 53I [Kr] 4d105s25p5 54Xe [Kr] 4d105s25p6
6 55Cs [Xe]6s1 56Ba [Xe]6s2 4f–block (14) and 5d–block (10), total of 32 elements in period 6 including the Lanthanide Series of Metals. 81Tl [Xe] 4f145d106s26p1 82Pb [Xe] 4f145d106s26p2 83Bi [Xe] 4f145d106s26p3 84Po [Xe] 4f145d106s26p4 85At [Xe] 4f145d106s26p5 86Rn [Xe] 4f145d106s26p6
7 87Fr [Rn]7s1 88Ra [Rn]7s2 5f–block and 6d–block including the Actinide Series of Metals in period 7, see full periodic table 113Nh [Rn] 5f146d107s27p1 114Fl [Rn] 5f146d107s27p2 115Mc [Rn] 5f146d107s27p3 116Lv [Rn] 5f146d107s27p4 117Ts [Rn] 5f146d107s27p5 118Og [Rn] 5f146d107s27p6

How to work out the electron configuration of elements
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