Alpha particles were fast-moving and positively charged particles emitted by radioactive elements. They were relatively massive and had a high kinetic energy.
Tiwari Academy Discussion Latest Questions
Alpha particles were fast-moving and positively charged particles emitted by radioactive elements. They were relatively massive and had a high kinetic energy.
Rutherford aimed to investigate the arrangement of electrons within an atom by studying the behavior of alpha particles as they interacted with a thin gold foil.
Thomson’s model proposed that atoms consisted of a positively charged sphere with embedded electrons, suggesting that atoms were not indivisible but composed of smaller particles.
In Thomson’s model, electrons were illustrated as small particles distributed within the positively charged sphere, similar to seeds in a watermelon.
Thomson compared the spread of positive charge within an atom to the edible red part of a watermelon, suggesting it was spread throughout the atom.
Thomson likened the structure of an atom to a Christmas pudding, where electrons were compared to currants embedded within a positively charged sphere.
Understanding the arrangement of electrons and protons within an atom was necessary to develop a more accurate model of atomic structure and explain various chemical phenomena.
Thomson’s model proposed that atoms were composed of positively charged matter with negatively charged electrons embedded within, resembling a “plum pudding” structure.
The discovery of electrons and protons inside the atom led to the failure of Dalton’s idea.