NEET > Chemistry Class 11 > Discovery of Sub-atomic Particles: Electrons
Discovery of Sub-atomic Particles: Electrons Video Lecture - Chemistry Class 11 - NEET
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FAQs on Discovery of Sub-atomic Particles: Electrons Video Lecture - Chemistry Class 11 - NEET
| 1. What is the discovery of sub-atomic particles? |  |
Ans. The discovery of sub-atomic particles refers to the identification and understanding of particles that are smaller than atoms. It involves the exploration and study of particles such as electrons, protons, and neutrons, which make up the building blocks of matter.
| 2. How was the electron discovered? | |
Ans. The electron was discovered through a series of experiments by J.J. Thomson in the late 19th century. He conducted experiments using cathode ray tubes and observed that a beam of negatively charged particles (later identified as electrons) was emitted from the cathode. This led to the understanding that atoms contain sub-atomic particles.
| 3. What is the significance of the discovery of electrons? | |
Ans. The discovery of electrons revolutionized our understanding of atomic structure and laid the foundation for modern physics. It provided evidence for the existence of sub-atomic particles and led to the development of theories such as the atomic model proposed by Thomson and later refined by Rutherford. The discovery of electrons also played a crucial role in the advancement of technologies such as electronics and telecommunications.
| 4. How do electrons contribute to chemical reactions? | |
Ans. Electrons play a fundamental role in chemical reactions. They are involved in the formation and breaking of chemical bonds, which determine the reactivity and stability of substances. In a chemical reaction, electrons are transferred or shared between atoms, leading to the formation of new compounds. The behavior of electrons governs the properties, behavior, and interactions of atoms in a chemical system.
| 5. Can electrons be destroyed or created? | |
Ans. According to the law of conservation of energy, electrons cannot be created or destroyed. They can only transfer from one atom to another or be shared between atoms. In chemical reactions or physical processes, electrons can change their energy levels or move from one orbital to another, but the total number of electrons remains constant.
About this Video
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Mohit Rajpoot |
Video Description: Discovery of Sub-atomic Particles: Electrons for NEET 2023 is part of Chemistry Class 11 preparation.
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195 videos|336 docs|190 tests
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Timeline
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| 08:09 | Question 3 |
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