{"ok":true,"q":"Atomic Number","n":57,"results":[{"id":"class_09\/science\/chapter_04_structure_of_the_atom","title":"Chapter 4 — Structure Of The Atom","class_num":9,"subject":"science","subject_label":"Science","summary":"Introduction: This chapter traces how the idea of the atom evolved from Dalton’s indivisible particles to modern models showing a tiny central nucleus surrounded by electrons. It e","topic":"Atomic Number and Mass Number","anchor":"topic-6"},{"id":"class_09\/science\/chapter_03_atoms_and_molecules","title":"Chapter 3 — Atoms And Molecules","class_num":9,"subject":"science","subject_label":"Science","summary":"This chapter introduces the basic building blocks of matter — atoms and molecules — and explains how they combine to form elements and compounds. Starting from historical laws of c","topic":"","anchor":""},{"id":"class_12\/physics\/chapter_05_nuclei","title":"Chapter 13 — Nuclei","class_num":12,"subject":"physics","subject_label":"Physics","summary":"This chapter explores the structure, properties and reactions of atomic nuclei — the small, dense cores of atoms made of protons and neutrons. It introduces fundamental concepts su","topic":"","anchor":""},{"id":"class_11\/chemistry\/chapter_03_classification_of_elements_and_periodicity_in_properties","title":"Chapter 3 — Classification Of Elements And Periodicity In Properties","class_num":11,"subject":"chemistry","subject_label":"Chemistry","summary":"Introduction: This chapter introduces the systematic arrangement of elements in the Periodic Table and explains the recurrence (periodicity) of chemical and physical properties. It","topic":"","anchor":""},{"id":"class_11\/chemistry\/chapter_02_structure_of_atom","title":"Chapter 2 — Structure Of Atom","class_num":11,"subject":"chemistry","subject_label":"Chemistry","summary":"This chapter introduces the historical development and modern understanding of the atom — from early atomic models to the quantum mechanical model. It explains experimental evidenc","topic":"","anchor":""},{"id":"class_12\/physics\/chapter_04_atoms","title":"Chapter 12 — Atoms","class_num":12,"subject":"physics","subject_label":"Physics","summary":"This chapter introduces the atomic structure as revealed by early 20th-century experiments and the first successful quantum model of the atom (Bohr model). Beginning with Rutherfor","topic":"","anchor":""},{"id":"class_11\/chemistry\/chapter_01_hydrogen","title":"Chapter 1 — Hydrogen","class_num":11,"subject":"chemistry","subject_label":"Chemistry","summary":"This chapter introduces Hydrogen — the simplest and most abundant element in the universe (electronic configuration 1s1) — and examines its unique position in the periodic table, p","topic":"","anchor":""},{"id":"class_10\/science\/chapter_05_periodic_classification_of_elements","title":"Chapter 5 — Periodic Classification Of Elements","class_num":10,"subject":"science","subject_label":"Science","summary":"You exceeded your current quota, please check your plan and billing details. For more information on this error, read the docs: https:\/\/platform.openai.com\/docs\/guides\/error-codes\/","topic":"","anchor":"sec-practice"},{"id":"class_12\/chemistry\/chapter_01_the_solid_state","title":"Chapter 1 — The Solid State","class_num":12,"subject":"chemistry","subject_label":"Chemistry","summary":"This chapter introduces the solid state — the study of crystalline and amorphous solids, their structure, packing and properties — forming a foundation for understanding materials.","topic":"Number of Atoms per Unit Cell","anchor":"topic-8"},{"id":"class_11\/chemistry\/chapter_01_some_basic_concepts_of_chemistry","title":"Chapter 1 — Some Basic Concepts Of Chemistry","class_num":11,"subject":"chemistry","subject_label":"Chemistry","summary":"This chapter 'Some Basic Concepts of Chemistry' introduces the fundamental ideas and numerical tools that form the foundation of chemical study. It explains how chemists describe m","topic":"","anchor":""}]}