Chemistry - Atomic Structure - Electron configuration - shells and energy levels - Configuration Race

A timed challenge where the child writes electron configurations as fast as possible. Show an element name and atomic number, and the child must type the configuration (e.g., '2,8,1' for Sodium-11). 20 elements in increasing difficulty: Start with H(1), He(2), Li(3), Be(4), C(6), N(7), O(8), Ne(10),