Zperiod: Interactive Periodic Table with 118 Elements and 3D Atom ModelsZperiod is a free interactive periodic table for chemistry students and teachers. Explore all 118 elements with 3D atom models, electron configurations, oxidation states and isotopes, plus an ion reference, chemistry tools and worksheet practice. Enable JavaScript to use the full app.All 118 elements

Hydrogen (H), atomic number 1

Helium (He), atomic number 2

Lithium (Li), atomic number 3

Beryllium (Be), atomic number 4

Boron (B), atomic number 5

Carbon (C), atomic number 6

Nitrogen (N), atomic number 7

Oxygen (O), atomic number 8

Fluorine (F), atomic number 9

Neon (Ne), atomic number 10

Sodium (Na), atomic number 11

Magnesium (Mg), atomic number 12

Aluminum (Al), atomic number 13

Silicon (Si), atomic number 14

Phosphorus (P), atomic number 15

Sulfur (S), atomic number 16

Chlorine (Cl), atomic number 17

Argon (Ar), atomic number 18

Potassium (K), atomic number 19

Calcium (Ca), atomic number 20

Scandium (Sc), atomic number 21

Titanium (Ti), atomic number 22

Vanadium (V), atomic number 23

Chromium (Cr), atomic number 24

Manganese (Mn), atomic number 25

Iron (Fe), atomic number 26

Cobalt (Co), atomic number 27

Nickel (Ni), atomic number 28

Copper (Cu), atomic number 29

Zinc (Zn), atomic number 30

Gallium (Ga), atomic number 31

Germanium (Ge), atomic number 32

Arsenic (As), atomic number 33

Selenium (Se), atomic number 34

Bromine (Br), atomic number 35

Krypton (Kr), atomic number 36

Rubidium (Rb), atomic number 37

Strontium (Sr), atomic number 38

Yttrium (Y), atomic number 39

Zirconium (Zr), atomic number 40

Niobium (Nb), atomic number 41

Molybdenum (Mo), atomic number 42

Technetium (Tc), atomic number 43

Ruthenium (Ru), atomic number 44

Rhodium (Rh), atomic number 45

Palladium (Pd), atomic number 46

Silver (Ag), atomic number 47

Cadmium (Cd), atomic number 48

Indium (In), atomic number 49

Tin (Sn), atomic number 50

Antimony (Sb), atomic number 51

Tellurium (Te), atomic number 52

Iodine (I), atomic number 53

Xenon (Xe), atomic number 54

Cesium (Cs), atomic number 55

Barium (Ba), atomic number 56

Lanthanum (La), atomic number 57

Cerium (Ce), atomic number 58

Praseodymium (Pr), atomic number 59

Neodymium (Nd), atomic number 60

Promethium (Pm), atomic number 61

Samarium (Sm), atomic number 62

Europium (Eu), atomic number 63

Gadolinium (Gd), atomic number 64

Terbium (Tb), atomic number 65

Dysprosium (Dy), atomic number 66

Holmium (Ho), atomic number 67

Erbium (Er), atomic number 68

Thulium (Tm), atomic number 69

Ytterbium (Yb), atomic number 70

Lutetium (Lu), atomic number 71

Hafnium (Hf), atomic number 72

Tantalum (Ta), atomic number 73

Tungsten (W), atomic number 74

Rhenium (Re), atomic number 75

Osmium (Os), atomic number 76

Iridium (Ir), atomic number 77

Platinum (Pt), atomic number 78

Gold (Au), atomic number 79

Mercury (Hg), atomic number 80

Thallium (Tl), atomic number 81

Lead (Pb), atomic number 82

Bismuth (Bi), atomic number 83

Polonium (Po), atomic number 84

Astatine (At), atomic number 85

Radon (Rn), atomic number 86

Francium (Fr), atomic number 87

Radium (Ra), atomic number 88

Actinium (Ac), atomic number 89

Thorium (Th), atomic number 90

Protactinium (Pa), atomic number 91

Uranium (U), atomic number 92

Neptunium (Np), atomic number 93

Plutonium (Pu), atomic number 94

Americium (Am), atomic number 95

Curium (Cm), atomic number 96

Berkelium (Bk), atomic number 97

Californium (Cf), atomic number 98

Einsteinium (Es), atomic number 99

Fermium (Fm), atomic number 100

Mendelevium (Md), atomic number 101

Nobelium (No), atomic number 102

Lawrencium (Lr), atomic number 103

Rutherfordium (Rf), atomic number 104

Dubnium (Db), atomic number 105

Seaborgium (Sg), atomic number 106

Bohrium (Bh), atomic number 107

Hassium (Hs), atomic number 108

Meitnerium (Mt), atomic number 109

Darmstadtium (Ds), atomic number 110

Roentgenium (Rg), atomic number 111

Copernicium (Cn), atomic number 112

Nihonium (Nh), atomic number 113

Flerovium (Fl), atomic number 114

Moscovium (Mc), atomic number 115

Livermorium (Lv), atomic number 116

Tennessine (Ts), atomic number 117

Oganesson (Og), atomic number 118

Rotate Your Device

Zperiod works best in landscape mode on tablets.

Desktop Experience Only

Please access Zperiod on a desktop browser.

Zperiod Get the app

Chemistry
you can see.

Orbitals in true 3D, the light of every atom and photos of the real elements.

Zperiod for iPhone

Every tool you reach for in chemistry, built for your phone.

Download on theApp Store See details

iOS 17 or later

Searching the App Store can show unofficial copies. This button goes to the official app.

A closer look.

See all features

1.4M+Users in 2026

40Languages

16Orbital shapes

Also free on your computer.

The full workspace runs in any desktop browser, with no sign-up.

Interactive periodic table with colour-coded element categories — **Periodic Table**Every element, colour-coded, with phase data and instant details.

Cobalt detail with a 3D atom model and common ions — **3D Atom Models**Electron shells, orbitals and swipeable fact cards for every element.

Equation balancer tool — **Chemistry Tools**Balancing, molar mass, solubility and a virtual lab.

Worksheet generator with balanced equation exercises — **Worksheet Studio**Print-ready equation worksheets with answer keys and PDF export.

Introducing

Zperiod

Master Chemistry.
Visually & Instantly.

The interactive periodic table designed for Grade 9-12 students. Stop memorizing — start visualizing.

Interactive Atoms Ion Engine Exam Ready

Philip Zhao

Creator & Full Stack Developer

Aurora High School · Grade 11 (2027)

Toronto, Canada

Chemistry Tools

Grade 9-12 Chemistry Calculators

Equation Balancer

Balance complex chemical equations automatically with visual stoichiometry feedback.

Molar Mass

Instantly compute molecular weights with a detailed element-by-element mass breakdown.

Solubility Table

Quickly reference interactive charts and rules for ionic compound solubilities.

Virtual Lab

Tilt a beaker and watch pseudo-liquid particles move and spill naturally.

SPDF Orbital Atlas

Explore all 16 atomic orbital shapes — s, p, d, and f — with interactive 3D probability-density models.

Molecular Shapes

Build 3D molecules and explore bonds, lone pairs and VSEPR molecular geometry.

Beta

Flame Studio

Flame tests and a rainbow of coloured flames in a dark room, with each metal's spectrum.

Worksheet Generator

Create useful worksheets for your class

Exercise Type

Number of Questions

Reaction Types

Synthesis A + B → AB

Decomposition AB → A + B

Single Replacement A + BC → AC + B

Double Replacement AB + CD → AD + CB

Combustion Hydrocarbon + O₂

Difficulty

Questions are generated from real, commonly taught reactions.

Click 'Generate Worksheet' to create practice problems

Zperiod Partnerships

Build science learning
together.

Zperiod now connects the web and app. We welcome education organizations, science brands, creators, and technology partners to build better learning experiences together.

Scroll

2M+

Monthly Views

400K+

Active Users

40+

Languages

100+

Countries

Why Partner

Built for science education.
Designed for impact.

Global Reach

Over 1.89 million monthly page views from students and educators across 100+ countries in 40+ languages.

Trusted Environment

An education-first experience across the Zperiod website and app, where thoughtful partnerships can become a natural part of learning.

Flexible Collaboration

Explore app integrations, educational content, community programs, and creative campaigns shaped around shared goals.

Partnership

Let's build something meaningful
for science learners.

Your information is sent securely and will only be used to follow up on your inquiry.

Buy Me a Coffee Support development

Electron Animation

Default View

Playback

Speed 0.6×

Mass display

Global Units

Temperature

Density

Energy

Send a Suggestion

Help us improve Zperiod — pick a topic or write your own.

A Personal Update on Source Code

To all the amazing people who have supported my journey: Thank you so much. Your continuous encouragement and enthusiasm for Zperiod mean the world to me.

Unfortunately, I have recently discovered several blatant clones reproducing my design, content, and UI for commercial gain. To protect the integrity of my hard work, I have made the difficult decision to temporarily transition my GitHub repository to private.

Please rest assured, once this project reaches its full maturity, I plan to reintroduce open-source components for the community to learn from!

The original public repository remains available for reference, but it will be temporarily paused and no longer updated.

Zperiod Old

Known Unauthorized Copies

Please help report these fakes

Evidence: App Store Clone

App Store Clone

Unauthorized iOS app replicating UI

Evidence: LinkedIn Post

LinkedIn Post

Plagiarized showcase post

Flame Studio Beta

Zperiod for iPhone

Rotate Your Device

Desktop Experience Only

Chemistryyou can see.

Zperiod for iPhone

A closer look.

Also free on your computer.

Zperiod

Master Chemistry.Visually & Instantly.

Philip Zhao

v3.4.0

Zperiod is on iPhone.

Zperiod - Complete Interactive Periodic Table with 118 Elements, 3D Atom Models, Ions, and Chemistry Tools

Chemistry Tools

Equation Balancer

Molar Mass

Solubility Table

Virtual Lab

SPDF Orbital Atlas

Molecular Shapes

Flame Studio

Worksheet Generator

Build science learningtogether.

Built for science education.Designed for impact.

Global Reach

Trusted Environment

Flexible Collaboration

Let's build something meaningfulfor science learners.

Global Units

Send a Suggestion

How to use this tool

Properties & Structure

Reaction Prediction

Common Uses & Hazards

Developer Inbox

Chemistry
you can see.

Master Chemistry.
Visually & Instantly.

Build science learning
together.

Built for science education.
Designed for impact.

Let's build something meaningful
for science learners.