Interactive Periodic Table

All 118 elements · phase slider · electron shells · quiz mode · trends

Element Comparison

What is the Periodic Table?

The periodic table is a chart that organises all 118 known chemical elements by increasing atomic number (the number of protons in the nucleus). Elements are arranged into 7 rows (periods) and 18 columns (groups), so that elements with similar chemical properties line up in the same group. This interactive version lets you explore each element's electron configuration, melting and boiling points, and how properties like electronegativity trend across the table.

List of All 118 Chemical Elements

The full list of elements below runs from Hydrogen (atomic number 1) to Oganesson (atomic number 118), with each element's symbol, name, standard atomic weight, and category. Click any cell in the interactive table above to see full details for that element.

All 118 elements by atomic number
#	Symbol	Element	Atomic weight	Category
1	H	Hydrogen	1.008	Nonmetal
2	He	Helium	4.003	Noble gas
3	Li	Lithium	6.941	Alkali metal
4	Be	Beryllium	9.012	Alkaline earth
5	B	Boron	10.81	Metalloid
6	C	Carbon	12.011	Nonmetal
7	N	Nitrogen	14.007	Nonmetal
8	O	Oxygen	15.999	Nonmetal
9	F	Fluorine	18.998	Halogen
10	Ne	Neon	20.180	Noble gas
11	Na	Sodium	22.990	Alkali metal
12	Mg	Magnesium	24.305	Alkaline earth
13	Al	Aluminium	26.982	Post-transition metal
14	Si	Silicon	28.086	Metalloid
15	P	Phosphorus	30.974	Nonmetal
16	S	Sulfur	32.06	Nonmetal
17	Cl	Chlorine	35.45	Halogen
18	Ar	Argon	39.948	Noble gas
19	K	Potassium	39.098	Alkali metal
20	Ca	Calcium	40.078	Alkaline earth
21	Sc	Scandium	44.956	Transition metal
22	Ti	Titanium	47.867	Transition metal
23	V	Vanadium	50.942	Transition metal
24	Cr	Chromium	51.996	Transition metal
25	Mn	Manganese	54.938	Transition metal
26	Fe	Iron	55.845	Transition metal
27	Co	Cobalt	58.933	Transition metal
28	Ni	Nickel	58.693	Transition metal
29	Cu	Copper	63.546	Transition metal
30	Zn	Zinc	65.38	Transition metal
31	Ga	Gallium	69.723	Post-transition metal
32	Ge	Germanium	72.630	Metalloid
33	As	Arsenic	74.922	Metalloid
34	Se	Selenium	78.971	Nonmetal
35	Br	Bromine	79.904	Halogen
36	Kr	Krypton	83.798	Noble gas
37	Rb	Rubidium	85.468	Alkali metal
38	Sr	Strontium	87.62	Alkaline earth
39	Y	Yttrium	88.906	Transition metal
40	Zr	Zirconium	91.224	Transition metal
41	Nb	Niobium	92.906	Transition metal
42	Mo	Molybdenum	95.95	Transition metal
43	Tc	Technetium	98	Transition metal
44	Ru	Ruthenium	101.07	Transition metal
45	Rh	Rhodium	102.91	Transition metal
46	Pd	Palladium	106.42	Transition metal
47	Ag	Silver	107.87	Transition metal
48	Cd	Cadmium	112.41	Transition metal
49	In	Indium	114.82	Post-transition metal
50	Sn	Tin	118.71	Post-transition metal
51	Sb	Antimony	121.76	Metalloid
52	Te	Tellurium	127.60	Metalloid
53	I	Iodine	126.90	Halogen
54	Xe	Xenon	131.29	Noble gas
55	Cs	Caesium	132.91	Alkali metal
56	Ba	Barium	137.33	Alkaline earth
57	La	Lanthanum	138.91	Lanthanide
58	Ce	Cerium	140.12	Lanthanide
59	Pr	Praseodymium	140.91	Lanthanide
60	Nd	Neodymium	144.24	Lanthanide
61	Pm	Promethium	145	Lanthanide
62	Sm	Samarium	150.36	Lanthanide
63	Eu	Europium	151.96	Lanthanide
64	Gd	Gadolinium	157.25	Lanthanide
65	Tb	Terbium	158.93	Lanthanide
66	Dy	Dysprosium	162.50	Lanthanide
67	Ho	Holmium	164.93	Lanthanide
68	Er	Erbium	167.26	Lanthanide
69	Tm	Thulium	168.93	Lanthanide
70	Yb	Ytterbium	173.05	Lanthanide
71	Lu	Lutetium	174.97	Lanthanide
72	Hf	Hafnium	178.49	Transition metal
73	Ta	Tantalum	180.95	Transition metal
74	W	Tungsten	183.84	Transition metal
75	Re	Rhenium	186.21	Transition metal
76	Os	Osmium	190.23	Transition metal
77	Ir	Iridium	192.22	Transition metal
78	Pt	Platinum	195.08	Transition metal
79	Au	Gold	196.97	Transition metal
80	Hg	Mercury	200.59	Transition metal
81	Tl	Thallium	204.38	Post-transition metal
82	Pb	Lead	207.2	Post-transition metal
83	Bi	Bismuth	208.98	Post-transition metal
84	Po	Polonium	209	Post-transition metal
85	At	Astatine	210	Halogen
86	Rn	Radon	222	Noble gas
87	Fr	Francium	223	Alkali metal
88	Ra	Radium	226	Alkaline earth
89	Ac	Actinium	227	Actinide
90	Th	Thorium	232.04	Actinide
91	Pa	Protactinium	231.04	Actinide
92	U	Uranium	238.03	Actinide
93	Np	Neptunium	237	Actinide
94	Pu	Plutonium	244	Actinide
95	Am	Americium	243	Actinide
96	Cm	Curium	247	Actinide
97	Bk	Berkelium	247	Actinide
98	Cf	Californium	251	Actinide
99	Es	Einsteinium	252	Actinide
100	Fm	Fermium	257	Actinide
101	Md	Mendelevium	258	Actinide
102	No	Nobelium	259	Actinide
103	Lr	Lawrencium	266	Actinide
104	Rf	Rutherfordium	267	Transition metal
105	Db	Dubnium	268	Transition metal
106	Sg	Seaborgium	269	Transition metal
107	Bh	Bohrium	270	Transition metal
108	Hs	Hassium	277	Transition metal
109	Mt	Meitnerium	278	Transition metal
110	Ds	Darmstadtium	281	Transition metal
111	Rg	Roentgenium	282	Transition metal
112	Cn	Copernicium	285	Transition metal
113	Nh	Nihonium	286	Post-transition metal
114	Fl	Flerovium	289	Post-transition metal
115	Mc	Moscovium	290	Post-transition metal
116	Lv	Livermorium	293	Post-transition metal
117	Ts	Tennessine	294	Halogen
118	Og	Oganesson	294	Noble gas

How the Table is Organised

Reading left to right, atomic number increases by one with each element. Groups (vertical columns) share the same number of outer-shell electrons and therefore similar behaviour — for example Group 1 is the reactive alkali metals and Group 18 is the inert noble gases. Periods (horizontal rows) correspond to the electron shell being filled. The lanthanides (57–71) and actinides (89–103) are shown as two separate rows below the main table to keep it compact.

FAQ — Frequently Asked Questions about the Periodic Table

Frequently Asked Questions — Periodic Table

How many elements are in the periodic table?

The periodic table contains 118 confirmed elements, from Hydrogen (atomic number 1) to Oganesson (atomic number 118). Elements 113-118 were officially named by IUPAC in 2016. Scientists continue to attempt synthesis of elements 119 and beyond.

What are the element categories in the periodic table?

Elements are grouped into categories based on their chemical and physical properties: alkali metals, alkaline earth metals, transition metals, post-transition metals, metalloids, reactive nonmetals, halogens, noble gases, lanthanides, and actinides. Each category shares similar electron configurations and reactivity patterns.

What is electronegativity and how does it trend across the periodic table?

Electronegativity measures an atom's ability to attract shared electrons in a chemical bond, using the Pauling scale. Fluorine has the highest electronegativity (3.98) while Francium has the lowest (~0.7). Electronegativity generally increases across a period (left to right) and decreases down a group (top to bottom). Noble gases are typically excluded as they rarely form bonds.

How does the temperature phase slider work?

The phase slider lets you set any temperature from 0 K to 6000 K. Each element on the table is then color-coded based on whether it is solid (blue), liquid (red), or gas (green) at that temperature, using real melting and boiling point data. Elements with unknown phase data are shown in gray.

What is an electron shell diagram?

An electron shell diagram shows how electrons are distributed across energy levels (shells) around an atom's nucleus. The first shell holds up to 2 electrons, the second up to 8, the third up to 18, and the fourth up to 32. Click any element to see its electron shell diagram visualized with concentric rings.

What periodic trends can I visualize?

This tool visualizes three key trends: electronegativity (tendency to attract electrons), atomic radius (size of atoms), and ionization energy (energy needed to remove an electron). Each trend is shown as a color gradient overlaid on the periodic table, making patterns across periods and groups immediately visible.

How do I compare two elements?

Click the Compare tab, then click any two elements on the table. Their properties — including atomic mass, density, melting point, boiling point, electronegativity, electron configuration, and discovery year — are displayed side-by-side for easy comparison.

What quiz modes are available?

Three quiz modes test different aspects of your periodic table knowledge: Find by Name (click the correct element on the table), Name from Symbol (type the element name given its symbol), and Identify by Number (type the element name given its atomic number).

Why are lanthanides and actinides shown separately?

Lanthanides (elements 57-71) and actinides (elements 89-103) are placed below the main table by convention to keep the table compact. If inserted in their true positions (period 6 group 3 and period 7 group 3), the table would be 32 columns wide, making it impractical to display.

Is this periodic table free to use?

Yes, completely free. No account, no subscription, no ads. It works offline as a PWA. It is one of the free browser-based tools at jasperbernaers.com.

Can I use this periodic table offline?

Yes. This tool is a Progressive Web App (PWA). After your first visit, it is cached locally and works without an internet connection. On mobile, you can add it to your home screen for quick access.

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Interactive Periodic Table

What is the Periodic Table?

List of All 118 Chemical Elements

How the Table is Organised

Frequently Asked Questions — Periodic Table