Interactive Periodic Table of Elements - All 118 Elements
Explore the complete periodic table of elements with all 118 elements. Click any element to see detailed information including atomic number,atomic mass, electron configuration, and more. Perfect for students, teachers, and science enthusiasts. Free to use, no download required!
Features of Our Interactive Periodic Table
- 🔬 All 118 Elements: Complete periodic table with latest elements
- 🎨 Color-Coded Categories: Metals, nonmetals, noble gases, and more
- 📊 Element Details: Click any element for full information
- 🔍 Quick Search: Find elements by name, symbol, or number
- 📱 Mobile Friendly: Works on phones, tablets, and computers
- 📥 Free Download: Save as image for printing or study
Element Categories Explained
Alkali Metals
Group 1: Li, Na, K, Rb, Cs, Fr - Highly reactive metals
Alkaline Earth Metals
Group 2: Be, Mg, Ca, Sr, Ba, Ra - Reactive metals
Transition Metals
Groups 3-12: Fe, Cu, Au, Ag - Common industrial metals
Metalloids
B, Si, Ge, As, Sb, Te, Po - Semiconductor properties
Nonmetals
C, N, O, P, S, Se - Essential for life
Noble Gases
Group 18: He, Ne, Ar, Kr, Xe, Rn - Chemically inert
How to Use the Periodic Table
- Browse: Scroll through all 118 elements in the classic table layout
- Click: Tap any element for detailed information
- Search: Use the search box to find elements quickly
- Filter: Click category legends to highlight element groups
- Learn: Read about atomic properties, uses, and history
Periodic Table for Students
Whether you're studying for a chemistry test, writing a research paper, or just curious about the elements, our interactive periodic table makes learning chemistry fun. Each element includes:
- • Atomic number and mass
- • Electron configuration
- • Element category and state at room temperature
- • Year of discovery
- • Common uses and interesting facts
Frequently Asked Questions
What is the periodic table of elements?
The periodic table is a tabular arrangement of all 118 known chemical elements organized by their atomic number, electron configuration, and recurring chemical properties. Elements are arranged in rows (periods) and columns (groups) that reflect their properties.
How many elements are in the periodic table?
There are currently 118 confirmed elements in the periodic table. Elements 1-94 occur naturally, while elements 95-118 have been synthesized in laboratories. The most recently added elements (113, 115, 117, 118) were officially named in 2016.
What are the groups in the periodic table?
Groups are vertical columns in the periodic table. Elements in the same group have similar chemical properties because they have the same number of electrons in their outer shell. Common groups include alkali metals (Group 1), halogens (Group 17), and noble gases (Group 18).
What are periods in the periodic table?
Periods are horizontal rows in the periodic table. There are 7 periods in total. Each period represents a new electron shell being filled. Period 1 has 2 elements, periods 2-3 have 8, periods 4-5 have 18, and periods 6-7 have 32 elements.
What are the different categories of elements?
Elements are categorized into: Alkali Metals, Alkaline Earth Metals, Transition Metals, Post-Transition Metals, Metalloids, Nonmetals, Halogens, Noble Gases, Lanthanides, and Actinides. Each category has distinct physical and chemical properties.
How do I read atomic number and atomic mass?
The atomic number (top number) shows the number of protons in the nucleus and defines the element. The atomic mass (bottom number) is the weighted average of all naturally occurring isotopes of that element, measured in atomic mass units (amu).
Which is the lightest and heaviest element?
Hydrogen (H) is the lightest element with an atomic mass of about 1.008 amu. Oganesson (Og) is the heaviest confirmed element with atomic number 118 and estimated atomic mass of 294 amu, though it's highly unstable.
Can I download this periodic table?
Yes! Click the Download button to save a high-resolution periodic table image. It's perfect for printing, studying, or classroom use. The download is completely free with no watermarks.
What are periodic trends in chemistry?
Periodic trends are predictable patterns in element properties as you move across periods (rows) or down groups (columns). Key trends include atomic radius (decreases across, increases down), ionization energy (increases across, decreases down), electronegativity (increases across, decreases down), and metallic character (decreases across, increases down).
Quick Element Facts
- 🔬 First element discovered: Phosphorus (1669) by Hennig Brand
- ⚛️ Most abundant in universe: Hydrogen (75% of all matter)
- 🌍 Most abundant on Earth: Oxygen (46% of Earth's crust)
- 💎 Rarest natural element: Astatine (less than 30g on entire Earth)
- 🔥 Highest melting point: Carbon (3,500°C as graphite)
Understanding Periodic Trends
Periodic trends are patterns in element properties that repeat across the periodic table. Understanding these trends helps predict how elements will behave chemically. The main periodic trends are:
📏 Atomic Radius
The size of an atom from its nucleus to its outermost electron shell.
- → Across a period (left to right): Decreases (more protons pull electrons closer)
- ↓ Down a group: Increases (more electron shells added)
- 📊 Smallest: Helium | Largest: Francium
⚡ Ionization Energy
The energy required to remove an electron from a neutral atom in its gaseous state.
- → Across a period: Increases (electrons held more tightly)
- ↓ Down a group: Decreases (outer electrons farther from nucleus)
- 📊 Highest: Helium (2372 kJ/mol) | Lowest: Francium
🧲 Electronegativity
An atom's ability to attract electrons in a chemical bond (Pauling scale).
- → Across a period: Increases (stronger nuclear attraction)
- ↓ Down a group: Decreases (electrons farther from nucleus)
- 📊 Highest: Fluorine (3.98) | Lowest: Francium (0.7)
🎯 Electron Affinity
The energy change when an electron is added to a neutral atom.
- → Across a period: Generally increases (more negative values)
- ↓ Down a group: Generally decreases
- 📊 Most negative: Chlorine (-349 kJ/mol)
Periodic Trends Summary Table
| Property | Across Period → | Down Group ↓ |
|---|---|---|
| Atomic Radius | ↘ Decreases | ↗ Increases |
| Ionization Energy | ↗ Increases | ↘ Decreases |
| Electronegativity | ↗ Increases | ↘ Decreases |
| Electron Affinity | ↗ More negative | ↘ Less negative |
| Metallic Character | ↘ Decreases | ↗ Increases |
💡 Why Do Periodic Trends Exist?
Periodic trends arise from the arrangement of electrons around the nucleus. As you move across a period, protons are added to the nucleus increasing nuclear charge, pulling electrons closer. As you move down a group, new electron shells are added, increasing the distance between the nucleus and valence electrons. This interplay of nuclear charge and electron shielding creates the predictable patterns we call periodic trends.