Periodic Table Explorer

ℹ️ What is Periodic Table Calculator?

A periodic table calculator provides detailed information on all 118 chemical elements — atomic number, symbol, atomic mass, electron configuration, group, period, and physical/chemical properties. It is an essential reference for chemistry students, researchers, and educators.

📐 Formula

✏️ Worked Example

1. 1Atomic Number: 6 (6 protons, 6 electrons)
2. 2Atomic Mass: 12.011 amu (mainly ¹²C and ¹³C isotopes)
3. 3Electron config: 1s² 2s² 2p² (4 valence electrons)
4. 4Group 14 (IVA), Period 2
5. 5Electronegativity: 2.55 (Pauling)

💡 How to Interpret Results

• ▸Elements in the same group (column) have the same number of valence electrons and similar properties.
• ▸Atomic radius increases down a group and decreases across a period (left to right).
• ▸Electronegativity increases across a period and decreases down a group.
• ▸Metals are on the left/center; nonmetals on the top-right; metalloids (semiconductors) along the diagonal boundary.
• ▸The transition metals (groups 3–12) fill d-orbitals and have variable oxidation states.

❓ Frequently Asked Questions

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