Periodic Table Explorer

Quick answer

Periodic Table Explorer

Interactive periodic table with detailed element properties, facts, and educational information for chemistry learning.

Element Categories

Alkali Metals
Alkaline Earth
Metals
Metalloids
Nonmetals
Halogens
Noble Gases

Element Details

Click on any element to explore its properties, facts, and chemical information.

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

Atomic Number = Protons | Mass Number = Protons + Neutrons
Atomic Number (Z)— Number of protons — defines the element
Atomic Mass— Weighted average mass of all isotopes in amu
Valence Electrons— Outermost electrons — determine chemical behavior
Electronegativity— Tendency to attract electrons in a bond (Pauling scale)

✏️ Worked Example

Element: Carbon (C)
  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)
✅ Result: Carbon: Z=6, Group 14, Period 2, 4 valence electrons, forms 4 bonds

💡 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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Frequently Asked Questions

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