Periodic Table Groups

Elements are organized into 18 vertical groups (columns) in the periodic table. Elements within the same group share similar chemical properties and valence electron configurations.

Understanding Groups

Group 1 (Alkali Metals): Highly reactive metals including lithium, sodium, and potassium. They have one valence electron.

Group 2 (Alkaline Earth Metals): Reactive metals like magnesium and calcium with two valence electrons.

Groups 3-12 (Transition Metals): Metals with variable oxidation states and unique properties like iron, copper, and gold.

Groups 13-16: Mixed groups containing metals, metalloids, and nonmetals with varying properties.

Group 17 (Halogens): Highly reactive nonmetals including fluorine, chlorine, and bromine.

Group 18 (Noble Gases): Unreactive gases with complete valence shells including helium, neon, and argon.

Alkali Metals

Group 1

Alkaline Earth

Group 2

Transition Metals

Groups 3-12

Halogens

Group 17

Noble Gases

Group 18

Lanthanides

Period 6, f-block

Filter by Group:

All Elements by Group

Other Groups (3-16)

Use the filter above to view specific groups, or see the table below for a complete list.

Atomic #	Symbol	Name	Group	Period	Category	Valence e⁻
1	H	Hydrogen	1	1	nonmetal	1
2	He	Helium	18	1	noble gas	2
3	Li	Lithium	1	2	alkali metal	1
4	Be	Beryllium	2	2	alkaline earth metal	2
5	B	Boron	13	2	metalloid	3
6	C	Carbon	14	2	nonmetal	4
7	N	Nitrogen	15	2	nonmetal	5
8	O	Oxygen	16	2	nonmetal	6
9	F	Fluorine	17	2	halogen	7
10	Ne	Neon	18	2	noble gas	8
11	Na	Sodium	1	3	alkali metal	1
12	Mg	Magnesium	2	3	alkaline earth metal	2
13	Al	Aluminum	13	3	post-transition metal	3
14	Si	Silicon	14	3	metalloid	4
15	P	Phosphorus	15	3	nonmetal	5
16	S	Sulfur	16	3	nonmetal	6
17	Cl	Chlorine	17	3	halogen	7
18	Ar	Argon	18	3	noble gas	8
19	K	Potassium	1	4	alkali metal	1
20	Ca	Calcium	2	4	alkaline earth metal	2
21	Sc	Scandium	3	4	transition metal	2
22	Ti	Titanium	4	4	transition metal	2
23	V	Vanadium	5	4	transition metal	2
24	Cr	Chromium	6	4	transition metal	1
25	Mn	Manganese	7	4	transition metal	2
26	Fe	Iron	8	4	transition metal	2
27	Co	Cobalt	9	4	transition metal	2
28	Ni	Nickel	10	4	transition metal	2
29	Cu	Copper	11	4	transition metal	1
30	Zn	Zinc	12	4	transition metal	2
31	Ga	Gallium	13	4	post-transition metal	3
32	Ge	Germanium	14	4	metalloid	4
33	As	Arsenic	15	4	metalloid	5
34	Se	Selenium	16	4	nonmetal	6
35	Br	Bromine	17	4	halogen	7
36	Kr	Krypton	18	4	noble gas	8
37	Rb	Rubidium	1	5	alkali metal	1
38	Sr	Strontium	2	5	alkaline earth metal	2
39	Y	Yttrium	3	5	transition metal	2
40	Zr	Zirconium	4	5	transition metal	2
41	Nb	Niobium	5	5	transition metal	1
42	Mo	Molybdenum	6	5	transition metal	1
43	Tc	Technetium	7	5	transition metal	2
44	Ru	Ruthenium	8	5	transition metal	1
45	Rh	Rhodium	9	5	transition metal	1
46	Pd	Palladium	10	5	transition metal	0
47	Ag	Silver	11	5	transition metal	1
48	Cd	Cadmium	12	5	transition metal	2
49	In	Indium	13	5	post-transition metal	3
50	Sn	Tin	14	5	post-transition metal	4
51	Sb	Antimony	15	5	metalloid	5
52	Te	Tellurium	16	5	metalloid	6
53	I	Iodine	17	5	halogen	7
54	Xe	Xenon	18	5	noble gas	8
55	Cs	Cesium	1	6	alkali metal	1
56	Ba	Barium	2	6	alkaline earth metal	2
57	La	Lanthanum		6	lanthanide	2
58	Ce	Cerium		6	lanthanide	2
59	Pr	Praseodymium		6	lanthanide	2
60	Nd	Neodymium		6	lanthanide	2
61	Pm	Promethium		6	lanthanide	2
62	Sm	Samarium		6	lanthanide	2
63	Eu	Europium		6	lanthanide	2
64	Gd	Gadolinium		6	lanthanide	2
65	Tb	Terbium		6	lanthanide	2
66	Dy	Dysprosium		6	lanthanide	2
67	Ho	Holmium		6	lanthanide	2
68	Er	Erbium		6	lanthanide	2
69	Tm	Thulium		6	lanthanide	2
70	Yb	Ytterbium		6	lanthanide	2
71	Lu	Lutetium		6	lanthanide	2
72	Hf	Hafnium	4	6	transition metal	2
73	Ta	Tantalum	5	6	transition metal	2
74	W	Tungsten	6	6	transition metal	2
75	Re	Rhenium	7	6	transition metal	2
76	Os	Osmium	8	6	transition metal	2
77	Ir	Iridium	9	6	transition metal	2
78	Pt	Platinum	10	6	transition metal	1
79	Au	Gold	11	6	transition metal	1
80	Hg	Mercury	12	6	transition metal	2
81	Tl	Thallium	13	6	post-transition metal	3
82	Pb	Lead	14	6	post-transition metal	4
83	Bi	Bismuth	15	6	post-transition metal	5
84	Po	Polonium	16	6	metalloid	6
85	At	Astatine	17	6	halogen	7
86	Rn	Radon	18	6	noble gas	8
87	Fr	Francium	1	7	alkali metal	1
88	Ra	Radium	2	7	alkaline earth metal	2
89	Ac	Actinium		7	actinide	2
90	Th	Thorium		7	actinide	2
91	Pa	Protactinium		7	actinide	2
92	U	Uranium		7	actinide	2
93	Np	Neptunium		7	actinide	2
94	Pu	Plutonium		7	actinide	2
95	Am	Americium		7	actinide	2
96	Cm	Curium		7	actinide	2
97	Bk	Berkelium		7	actinide	2
98	Cf	Californium		7	actinide	2
99	Es	Einsteinium		7	actinide	2
100	Fm	Fermium		7	actinide	2
101	Md	Mendelevium		7	actinide	2
102	No	Nobelium		7	actinide	2
103	Lr	Lawrencium		7	actinide	2
104	Rf	Rutherfordium	4	7	transition metal	2
105	Db	Dubnium	5	7	transition metal	2
106	Sg	Seaborgium	6	7	transition metal	2
107	Bh	Bohrium	7	7	transition metal	2
108	Hs	Hassium	8	7	transition metal	2
109	Mt	Meitnerium	9	7	transition metal	2
110	Ds	Darmstadtium	10	7	transition metal	2
111	Rg	Roentgenium	11	7	transition metal	2
112	Cn	Copernicium	12	7	transition metal	2
113	Nh	Nihonium	13	7	post-transition metal	3
114	Fl	Flerovium	14	7	post-transition metal	4
115	Mc	Moscovium	15	7	post-transition metal	5
116	Lv	Livermorium	16	7	post-transition metal	6
117	Ts	Tennessine	17	7	halogen	7
118	Og	Oganesson	18	7	noble gas	8

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