Chemistry
Draw a neat labeled diagram representing an atom. Name the three sub-atomic particles in the atom & represent them symbolically showing the mass & charge of each. State where the sub-atomic particles are present in the atom.
Answer
Below labelled diagram shows the representation of an atom as per the modern atomic theory:
![Draw a neat labeled diagram representing an atom. Atomic Structure, Simplified Chemistry Dalal Solutions ICSE Class 8.](https://cdn1.knowledgeboat.com/img/scd8/atom-representation-simplified-chemistry-icse-class-8-372x187.png)
The three sub-atomic particles in the atom are:
S. No. | Sub-atomic particle | Symbol |
---|---|---|
1. | Proton | +1p1 |
2. | Neutron | 0n1 |
3. | Electron | -1e0 |
Protons and neutrons are found inside the nucleus of the atom. Electrons are distributed across energy levels outside of the nucleus.
Related Questions
With reference to the discovery of the structure of an atom, explain in brief - William Crookes experiment for the discovery of cathode rays, followed by - J.J. Thomsons experiment pertaining to the constituents of the cathode rays.
State which sub-atomic particle was discovered from his experiment.Explain in brief - Goldstein's experiment which led to the discovery of the proton and - Lord Rutherford's experiment which led to the discovery of the atomic nucleus.
'Electrons revolve around the nucleus in fixed orbits or shells called energy levels'. State how these energy levels are represented.