Ground State Electron Configurations

Submitted by ChemPRIME Staff on Thu, 12/09/2010 - 14:34

Ground-State Electron Configurations of AtomsThe smallest particle of an element that can be involved in chemical combination with another element; an atom consists of protons and neutrons in a tiny, very dense nucleus, surrounded by electrons, which occupy most of its volume.

Z	Element	Configuration
1	H	1s ¹
2	He	1s ²

3	Li	[He] 2s ¹
4	Be	[He] 2s ²
5	B	[He] 2s ² 2p¹
6	C	[He] 2s ² 2p²
7	N	[He] 2s ² 2p³
8	0	[He] 2s ² 2p⁴
9	F	[He] 2s ² 2p⁵
10	Ne	[He] 2s ² 2p⁶

11	Na	[Ne] 3s ¹
12	Mg	[Ne] 3s ²
13	Al	[Ne] 3s ² 3p¹
14	Si	[Ne]3s ² 3p²
15	P	[Ne] 3s ² 3p³
16	S	[Ne] 3s ² 3p⁴
17	Cl	[Ne] 3s ² 3p⁵
18	Ar	[Ne] 3s ² 3p⁶

19	K	[Ar] 4s ¹
20	Ca	[Ar] 4s ²
21	Sc	[Ar] 3d ¹ 4s ²
22	Ti	[Ar] 3d ² 4s ²
23	V	[Ar] 3d ³ 4s ²
24	Cr	[Ar] 3d ⁵ 4s ¹
25	Mn	[Ar] 3d ⁵ 4s ²
26	Fe	[Ar] 3d ⁶ 4s ²
27	Co	[Ar] 3d ⁷ 4s ²
28	Ni	[Ar] 3d ⁸ 4s ²
29	Cu	[Ar] 3d ¹⁰ 4s ¹
30	Zn	[Ar] 3d ¹⁰ 4s ²
31	Ga	[Ar] 3d ¹⁰ 4s ² 4p ¹
32	Ge	[Ar] 3d ¹⁰ 4s ² 4p ²
33	As	[Ar] 3d ¹⁰ 4s ² 4p ³
34	Se	[Ar] 3d ¹⁰ 4s ² 4p ⁴
35	Br	[Ar] 3d ¹⁰ 4s ² 4p ⁵
36	Kr	[Ar] 3d ¹⁰ 4s ² 4p ⁶

37	Rb	[Kr] 5s ¹
38	Sr	[Kr] 5s ²
39	Y	[Kr] 4d ¹ 5s ²
40	Zr	[Kr] 4d ² 5s ²
41	Nb	[Kr] 4d ⁴ 5s ¹
42	Mo	[Kr] 4d ⁵ 5s ¹
43	Tc	[Kr] 4d ⁵ 5s ²
44	Ru	[Kr] 4d ⁷ 5s ¹
45	Rh	[Kr] 4d ⁸ 5s ¹
46	Pd	[Kr] 4d ¹⁰
47	Ag	[Kr] 4d ¹⁰ 5s ¹
48	Cd	[Kr] 4d ¹⁰ 5s ²
49	In	[Kr] 4d ¹⁰ 5s ² 5p ¹
50	Sn	[Kr] 4d ¹⁰ 5s ² 5p ²
51	Sb	[Kr] 4d ¹⁰ 5s ² 5p ³
52	Te	[Kr] 4d ¹⁰ 5s ² 5p ⁴
53	I	[Kr] 4d ¹⁰ 5s ² 5p ⁵
54	Xe	[Kr] 4d ¹⁰ 5s ² 5p ⁶

55	Cs	[Xe] 6s ¹
56	Ba	[Xe] 6s ²
57	La	[Xe] 5d ¹ 6s ²
58	Ce	[Xe] 4f ¹ 5d ¹ 6s ²
59	Pr	[Xe] 4f ³ 6s ²
60	Nd	[Xe] 4f ⁴ 6s ²
61	Pm	[Xe] 4f ⁵ 6s ²
62	Sm	[Xe] 4f ⁶ 6s ²
63	Eu	[Xe] 4f ⁷ 6s ²
64	Gd	[Xe] 4f ⁷ 5d ¹ 6s ²
65	Tb	[Xe] 4f ⁹ 6s ²
66	Dy	[Xe] 4f ¹⁰ 6s ²
67	Ho	[Xe] 4f ¹¹ 6s ²
68	Er	[Xe] 4f ¹² 6s ²
69	Tm	[Xe] 4f ¹³ 6s ²
70	Yb	[Xe] 4f ¹⁴ 6s ²
71	Lu	[Xe] 4f ¹⁴ 5d ¹ 6s ²
72	Hf	[Xe] 4f ¹⁴ 5d ² 6s ²
73	Ta	[Xe] 4f ¹⁴ 5d ³ 6s ²
74	W	[Xe] 4f ¹⁴ 5d ⁴ 6s ²
75	Re	[Xe] 4f ¹⁴ 5d ⁵ 6s ²
76	0s	[Xe] 4f ¹⁴ 5d ⁶ 6s ²
77	Ir	[Xe] 4f ¹⁴ 5d ⁷ 6s ²
78	Pt	[Xe] 4f ¹⁴ 5d ⁹ 6s ¹
79	Au	[Xe] 4f ¹⁴ 5d ¹⁰ 6s ¹
80	Hg	[Xe] 4f ¹⁴ 5d ¹⁰ 6s ²
81	Tl	[Xe] 4f ¹⁴ 5d ¹⁰ 6s ² 6p¹
82	Pb	[Xe] 4f ¹⁴ 5d ¹⁰ 6s ² 6p²
83	Bi	[Xe] 4f ¹⁴ 5d ¹⁰ 6s ² 6p ³
84	Po	[Xe] 4f ¹⁴ 5d ¹⁰ 6s ² 6p ⁴
85	At	[Xe] 4f ¹⁴ 5d ¹⁰ 6s ² 6p ⁵
86	Rn	[Xe] 4f ¹⁴ 5d ¹⁰ 6s ² 6p ⁶

87	Fr	[Rn] 7s ¹
88	Ra	[Rn] 7s ²
89	Ac	[Rn] 6d ¹ 7s ²
90	Th	[Rn] 6d ² 7s ²
91	Pa	[Rn] 5f ² 6d ¹ 7s ²
92	U	[Rn] 5f ³ 6d ¹ 7s ²
93	Np	[Rn] 5f ⁴ 6d ¹ 7s ²
94	Pu	[Rn] 5f ⁶ 7s ²
95	Am	[Rn] 5f ⁷ 7s ²
96	Cm	[Rn] 5f ⁷ 6d ¹ s ²
97	Bk	[Rn] 5f ⁹ s ²
98	Cf	[Rn] 5f ¹⁰ s ²
99	Es	[Rn] 5f ¹¹ s ²
100	Fm	[Rn] 5f ¹² s ²
101	Md	[Rn] 5f ¹³ s ²
102	No	[Rn] 5f ¹⁴ s ²
103	Lr	[Rn] 5f ¹⁴ 6d ¹ s ²
104	Rf	[Rn] 5f ¹⁴ 6d ² s ²

Term of the Day

degree of ionization

The extent to which a species in solutionA mixture of one or more substances dissolved in a solvent to give a homogeneous mixture. ionizes. Often applied to the ionizationA process in which an atom, molecule, or negative ion loses an electron; a process in which a covalent molecule reacts with a solvent to form positive and negative ions; for example, a weak acid reacting with water to form its conjugate base (an anion) and a hydrogen (hydronium) ion. reactions of acids and bases.

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