What is the five atomic model
Answer (1)
1. Dalton’s Model (early 1800s) – Proposed by John Dalton, it described the atom as a solid, indivisible sphere, like a billiard ball, without internal structure.2. Thomson’s Model (1897) – J.J. Thomson discovered electrons and suggested the “plum pudding” model, where negatively charged electrons are embedded in a positively charged sphere.3. Rutherford’s Model (1911) – Ernest Rutherford found that atoms have a small, dense, positively charged nucleus with electrons orbiting around it, mostly empty space in between.4. Bohr’s Model (1913) – Niels Bohr proposed that electrons orbit the nucleus in fixed energy levels or shells and emit or absorb energy when jumping between orbits.5. Quantum Mechanical Model (1920s and after) – This modern model describes electrons as waves or clouds with probabilities of being in certain regions, rather than fixed orbits, based on quantum mechanics.
