Updated: 2026-07-11
Interactive periodic table of elements. Click any element for detailed properties including atomic mass, electron configuration, and physical properties.
Legend:
Nonmetal
Metal
Metalloid
Noble gas
Lanthanide
Actinide
How to Use the Periodic Table
Solve math problems with the Periodic Table in three steps:
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Enter Your Numbers or Equation
Type the numbers, equation, or data set into the input fields. The tool supports various mathematical operations and formats. -
Select the Operation
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View the Solution
The result is displayed instantly with clear formatting. Copy the answer or adjust inputs to explore different scenarios.
FAQ
How many elements are in the periodic table?
There are 118 known elements, from Hydrogen (H, atomic number 1) to Oganesson (Og, atomic number 118). 94 occur naturally, the rest are synthetic.
How to read the periodic table?
The table is arranged by atomic number. Rows are periods (7), columns are groups (18). Elements in the same group have similar chemical properties.
What are lanthanides and actinides?
Lanthanides (57-71) and actinides (89-103) are the two rows below the main table, belonging to periods 6 and 7.
What is the heaviest element?
Oganesson (Og, element 118) with atomic mass 294, first synthesized in 2002.