Periodic Table for Chemists vs Elements

The complete periodic table app for chemists, students, and science enthusiasts. Built on a comprehensive chemistry database, this app delivers professional-grade element data in a beautiful, intuitive interface. COMPREHENSIVE ELEMENT DATA • All 118 elements with extensive properties • Atomic mass, density, melting/boiling points • Electron configuration and orbital structure • Ionization energies and atomic radii • Crystal structure and lattice parameters • Oxidation states and chemical reactivity ADVANCED CHEMISTRY TOOLS • 11 electronegativity scales (Pauling, Sanderson, Allen, Mulliken, and more) • Effective nuclear charge (Zeff) calculations using Slater's rules • Electronic structure visualization • Valence electron identification • Chemical reactivity indicators POWERFUL SEARCH & ORGANIZATION • Instant search by element name, symbol, or atomic number • Filter by category (metals, nonmetals, noble gases, etc.) • Browse by period, group, or block • Save favorites for quick access • Add personal notes to elements BEAUTIFUL INTERFACE • Interactive periodic table with smooth zoom and pan • Category-based color coding • Dark mode support • Optimized for iPhone and iPad • Accessibility features built-in PROFESSIONAL DATA SOURCES All data is sourced from authoritative references including NIST, IUPAC, and peer-reviewed scientific literature. The app uses the same comprehensive database that powers the mendeleev Python library, trusted by researchers worldwide. WORKS OFFLINE All element data is bundled with the app. No internet connection required for core functionality: perfect for classrooms, labs, and field work. PERFECT FOR: • Chemistry students studying atomic structure • Research chemists needing quick reference data • Educators teaching periodic trends • Anyone fascinated by the elements Whether you're memorizing electron configurations, comparing electronegativity values, or exploring chemical properties, this app provides the depth and accuracy you need. Download the definitive periodic table reference today.

Elements turns the periodic table into short quiz rounds you can finish in a couple of minutes — on the bus, between classes, or the night before an exam. Ten questions per round. Every answer is shown immediately, and anything you miss goes to your review list so you drill the elements you actually get wrong instead of the ones you already know. FOUR WAYS TO PRACTISE - Symbol to name: see Fe, pick Iron - Name to symbol: see Iron, pick Fe - Atomic number: which element is number 26? - Element groups: metal, halogen or noble gas? THREE DIFFICULTY RANGES Start with the first 20 elements, move up to 36, then take on all 118. THE WHOLE TABLE Tap any element to see its atomic number, period, group and category. Categories are colour coded, so the shape of the table makes sense at a glance. WORKS ANYWHERE No account, no sign-up, no internet. The app makes no network requests at all, so it works in airplane mode and in an exam room. Your best score and your missed elements stay on your device — the App Store privacy label reads "Data Not Collected" because nothing is collected. FREE AND PAID The free version covers the first 20 elements in symbol-to-name mode, plus the full table and mistake review. One payment unlocks all 118 elements and all four quiz modes. No subscription, ever. Built for students, teachers and anyone who wants the table in their head rather than on a poster.