Interactive periodic table — click any element to see atomic number, valency, uses and more. All 118 elements, free.
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👆 Tap an element to see details
Try Hydrogen, Iron, Gold or Uranium — or use search and filters above.
How to use
Explore: click or tap any element tile to view its full details.
Filter: show only Alkali Metals, Halogens, Noble Gases and more.
Search: type a name, symbol or atomic number for instant lookup.
Quiz: test yourself — guess the element from its properties.
Use this table for NEB Class 11/12 Chemistry homework, SEE science prep and IOE engineering entrance practice.
Why use our periodic table?
The periodic table arranges all 118 known elements by atomic number. Elements in the same column share similar chemical properties, and rows (periods) show the number of electron shells. Lanthanides and actinides sit below the main table to keep it readable — they fit between groups 3 and 4 in periods 6 and 7.
Frequently asked questions
What is valency? Valency is an element's combining capacity — how many bonds its atoms can form, decided by the electrons in its outermost shell.
Why are lanthanides and actinides placed below? To keep the table readable. Embedding 15 extra columns would make it impractically wide.
What is atomic mass? The average mass of an element's atoms, accounting for all its naturally occurring isotopes.
What are noble gases? Group 18 elements like Helium and Neon — extremely unreactive because their outer electron shell is full.
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