Atomic Models and Their Drawbacks
Atomic Models and Their Drawbacks The development of atomic models has been crucial in understanding the structure and behavior of atoms. Over time, several models have been proposed, each improving on the previous one. Here’s a detailed explanation of key atomic models and their drawbacks: 1. Dalton’s Atomic Model (1803) Key Points: Proposed by John Dalton. Atoms are indivisible particles. Atoms of the same element are identical in mass and properties. Compounds are formed by the combination of different atoms in fixed ratios. Drawbacks: Failed to explain the existence of subatomic particles (electrons, protons, and neutrons). Could not account for the nature of chemical bonds. Did not explain isotopes, where atoms of the same element have different masses. 2. Thomson’s Plum Pudding Model (1904) Key Points: Proposed by J.J. Thomson. Atoms are composed of electrons scattered within a “soup” of positive charge, like plums in a pudding. Suggested that the atom is divisible and conta...