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Structure of Atom Video Lecture | Science Class 9
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FAQs on Structure of Atom Video Lecture - Science Class 9
| 1. What are the main components of an atom? |  |
| 2. How does the arrangement of electrons affect the chemical properties of an atom? | |
Ans.The arrangement of electrons in an atom, particularly the distribution in the outermost shell (valence electrons), determines the atom's chemical properties. Atoms with similar configurations tend to exhibit similar behaviors in chemical reactions, influencing how they bond with other atoms to form compounds.
| 3. What is the significance of the atomic number? | |
Ans.The atomic number of an atom is the number of protons in its nucleus, which uniquely identifies an element. It determines the element's position in the periodic table and influences its chemical properties. For example, carbon has an atomic number of 6, meaning it has six protons and typically six electrons.
| 4. What is the difference between isotopes of an element? | |
Ans.Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons. This difference in neutron count results in varying atomic masses. For example, carbon has isotopes like carbon-12 and carbon-14, which have 6 and 8 neutrons, respectively.
| 5. How do atomic models have evolved over time? | |
Ans.Atomic models have evolved significantly from Dalton's solid sphere model to the current quantum mechanical model. Each model has contributed to our understanding of atomic structure, moving from the idea of indivisible atoms to complex models that describe electron behavior and probabilities, such as the electron cloud model used today.
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