Start learning →

Order the atomic models as they were proposed

Exercise and reference answers

Steps
  1. Dalton: the atom is the ultimate indivisible particle
  2. Thomson: a sphere of positive charge with electrons embedded
  3. Rutherford: a tiny dense nucleus with electrons revolving around it
  4. Bohr: electrons in fixed circular orbits of definite energy
  5. Schrodinger: a wave equation giving energy states and orbitals

Explanation

syllabus walks through them in this order, each answering what the previous one could not: Dalton 1808, Thomson 1898, Rutherford 1909, Bohr 1913, Schrodinger 1926. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.
Continue learning with Quill →

Browse more Bihar Board Class 12 (Science) questions and exercises →