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Quickly search the periodic table to get detailed element properties and chemical formulas.
Atomic weights use CIAAW 2024: brackets show intervals, parentheses uncertainty, and — no standard atomic weight. Other fields are local references; superheavy phases are undetermined. Reference
Filter by name (Chinese/English), symbol, or atomic number.
Periodic Table
118 Elements FoundAtomic Mass
[1.00784,1.00811]
Standard State
Gas
Period / Group
Period 1 · Group 1
Block
s
Electron Configuration
1s1Quick Facts
Search Results
118 Elements FoundOverview
Understand what the tool solves, how it works, and the boundaries of its data.
Search the built-in element list by element name, chemical symbol, atomic number, displayed atomic-mass text or category. You can also narrow the table by category and select a result to view its listed properties: phase, group, period, block and electron configuration. Atomic number is the number used to identify an element in the periodic table; the table’s ordering follows increasing atomic number. For a reference framework, see IUPAC’s Periodic Table of Elements (checked 2026-09-29).
A chemical symbol is the short letter abbreviation for an element, such as H for hydrogen. A group is a vertical column and a period is a horizontal row in the table. The block field summarizes the orbital type associated with the element’s outer electrons. Electron configuration describes how electrons occupy shells and subshells. Atomic-mass text is shown as a listed value; it should not be treated as an isotope-specific mass without further context.
The search term and selected category are both applied to the displayed table. Try a name such as oxygen, a symbol such as O, or an atomic number such as 8. The category filter can reduce the results to groups such as noble gases, halogens, lanthanides or actinides. The displayed list is a fixed reference dataset and is not presented as a live or versioned measurement service.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Type an element name, symbol, atomic number, mass text or category term into the search field.
Select a category filter if you want to narrow the matches further.
Choose an element from the filtered table and read its listed properties.
Reset the filters to restore the full table when you want to start a different lookup.
Use cases
See how the tool fits into real work and everyday tasks.
Look up an element during a class exercise or while reading a formula, then confirm the selected element’s name and number.
Read group, period and block fields to orient yourself in the periodic table while studying element families.
Filter to a category such as noble gas or halogen, then inspect the matching element entries.
Q&A
Find concise answers to common questions and confusing cases.
Yes. Search accepts the element name, symbol, atomic number, displayed atomic-mass text or category. For example, oxygen, O and 8 identify the same element.
The selected item must remain among the current matches. If filters exclude it, the selection moves to an available result.
The table displays an atomic-mass value as text; it does not provide isotope selection or isotope-specific masses. Consult an authoritative isotope reference when that distinction matters.
Notes
Review scope, result limitations, and important precautions before use.
This is a searchable reference table with a fixed dataset, not a live, versioned scientific database. Verify values with current authoritative references for research, publication or laboratory use. It does not provide isotope tables or detailed experimental property data.
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