Interactive Periodic Table of Elements (All 118 Elements)
Explore the complete 18-column IUPAC standard Periodic Table of chemical elements. Access comprehensive physical properties, electron orbital configurations, Pauling electronegativities, atomic radii, oxidation states, standard reduction potentials, 3D VSEPR molecular geometry simulations, and step-by-step chemical reaction balancers.
Key Features & Chemical Simulation Engines
⚡ 118 Chemical Elements & Orbitals
Full atomic parameters for all 118 elements: atomic number, standard atomic weight, s/p/d/f block classifications, periods 1–7, noble gas configurations, and thermal physical states simulated from 0 K to 5500 K.
🔬 3D VSEPR Molecular Geometry
Interactive 3D geometry engine calculating steric numbers, bonding pairs, lone pairs, hybridization (sp to sp³d³), and bond angles from Linear to Pentagonal Bipyramidal, plus cubic crystal lattice unit cells (SC, BCC, FCC, NaCl, CsCl).
🔋 Live Galvanic & Daniell Cell Simulator
Electrochemical cell engine with animated electron and salt bridge ion flow, Nernst equation solver at arbitrary temperature and ion molarity, and complete standard reduction potentials (E°_red) series.
⚖️ Step-by-Step Redox Balancer
Ion-electron half-reaction solver for complex oxidation-reduction reactions in acidic and alkaline media with step-by-step oxidation state breakdowns and electron proofs.
🧪 Salt Analysis & Flame Test Lab
Virtual chemistry wet lab for basic radicals (Groups 0 to VI cations) and acid radicals (anions), confirmatory precipitate tests, and realistic Bunsen burner flame emissions.
🎯 CEE & NEB Board Exam Practice
Custom 50-question mock exam simulator with official negative marking (-0.25 penalty), countdown timer, high-yield chemistry flashcard decks (Leitner spaced repetition), and Devanagari terminology.
Complete Chemical Elements Index (118 IUPAC Elements)
Select any chemical element below to inspect comprehensive atomic weights, orbital configurations, common isotopes, electronegativities, and exam notes:
Frequently Asked Questions (Chemistry FAQs)
- What is the IUPAC Periodic Table of Elements?
- The IUPAC Periodic Table arranges the 118 known chemical elements in order of increasing atomic number (nuclear proton count). Elements with similar chemical behaviors fall into identical vertical columns called Groups (1 to 18), while horizontal rows are called Periods (1 to 7).
- How do periodic trends change across periods and groups?
- Atomic radius decreases across a period due to increased effective nuclear charge (Z_eff) and increases down a group due to additional electron shells. Electronegativity and first ionization energy generally increase across a period and decrease down a group, with Fluorine possessing the highest Pauling electronegativity (3.98).
- What is the Nernst Equation in electrochemistry?
- The Nernst equation calculates cell reduction potential under non-standard conditions: E = E° - (RT/nF)·ln(Q), where at 298.15 K this simplifies to E = E° - (0.0592/n)·log10(Q). It enables quantitative prediction of voltage in Galvanic and concentration cells.
- How does VSEPR theory predict 3D molecular shapes?
- VSEPR calculates the steric number (number of bonded atoms plus lone electron pairs on the central atom). Electron pair repulsions follow the order: Lone Pair-Lone Pair > Lone Pair-Bond Pair > Bond Pair-Bond Pair, which distorts ideal geometric angles.