Electronic Configuration of Elements 1–30 with Table & MCQs
Learning the electronic configuration of elements is the key to understanding how atoms behave, bond, and form compounds. From simple elements like Hydrogen to transition metals like Zinc, each has a unique pattern that explains its properties. The table below shows the electronic configuration, shell distribution, and valency of the first 30 elements in the periodic table. Following the table, we offer MCQs to help you quickly revise and test your knowledge in a fun and effective way. Electronic Configuration of Elements (1–30) Atomic Number Element (Symbol) Electronic Configuration (Subshell wise) Electronic Configuration (Shell wise) Valency 1 Hydrogen (H) 1s¹ 1 1 2 Helium (He) 1s² 2 0 3 Lithium (Li) 1s² 2s¹ 2, 1 1 4 Beryllium (Be) 1s² 2s² 2, 2 2 5 Boron (B) 1s² 2s² 2p¹ 2, 3 3 6 Carbon (C) 1s² 2s² 2p² 2, 4 4 7 Nitrogen (N) 1s² 2s² 2p³ 2, 5 3 8 Oxygen (O) 1s² 2s² 2p⁴ 2, 6 2 9 Fluorin...