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Pankaj Kapoor

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  1. Asked: April 26, 2024In: Class 9 Science

    What are alpha (α)-particles?

    Pankaj Kapoor
    Added an answer on April 27, 2024 at 6:15 am

    Alpha particles are positively charged particles consisting of two protons and two neutrons, essentially a helium nucleus, emitted during radioactive decay or generated in nuclear reactions.

    Alpha particles are positively charged particles consisting of two protons and two neutrons, essentially a helium nucleus, emitted during radioactive decay or generated in nuclear reactions.

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  2. Asked: April 26, 2024In: Class 9 Science

    Why did Rutherford choose a gold foil for his experiment?

    Pankaj Kapoor
    Added an answer on April 27, 2024 at 6:15 am

    Rutherford chose gold foil for its malleability, allowing him to create extremely thin sheets. Gold's atomic structure made it ideal for testing the proposed model of the atom due to its high density and ability to reflect alpha particles effectively.

    Rutherford chose gold foil for its malleability, allowing him to create extremely thin sheets. Gold’s atomic structure made it ideal for testing the proposed model of the atom due to its high density and ability to reflect alpha particles effectively.

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  3. Asked: April 26, 2024In: Class 9 Science

    What experiment did Ernest Rutherford design to investigate the arrangement of electrons within an atom?

    Pankaj Kapoor
    Added an answer on April 27, 2024 at 6:15 am

    Ernest Rutherford designed the gold foil experiment to investigate the arrangement of electrons within an atom. By bombarding a thin gold foil with alpha particles, he aimed to understand the atom's structure.

    Ernest Rutherford designed the gold foil experiment to investigate the arrangement of electrons within an atom. By bombarding a thin gold foil with alpha particles, he aimed to understand the atom’s structure.

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  4. Asked: April 26, 2024In: Class 9 Science

    What was the purpose of Thomson’s analogies in describing the atomic structure?

    Pankaj Kapoor
    Added an answer on April 27, 2024 at 6:15 am

    Thomson's analogies, like the "plum pudding" model, aimed to provide a conceptual framework for understanding the atomic structure by relating it to familiar objects or phenomena, making the complex and abstract nature of atoms more accessible and comprehensible to the general audience.

    Thomson’s analogies, like the “plum pudding” model, aimed to provide a conceptual framework for understanding the atomic structure by relating it to familiar objects or phenomena, making the complex and abstract nature of atoms more accessible and comprehensible to the general audience.

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  5. Asked: April 26, 2024In: Class 9 Science

    How did Thomson visualize the arrangement of electrons in his atomic model?

    Pankaj Kapoor
    Added an answer on April 27, 2024 at 6:15 am

    Thomson visualized electrons embedded within a positively charged "plum pudding" or "raisin bun" matrix, akin to raisins in a cake, where the positive charge distributed throughout the atom counterbalanced the negative charge of the electrons.

    Thomson visualized electrons embedded within a positively charged “plum pudding” or “raisin bun” matrix, akin to raisins in a cake, where the positive charge distributed throughout the atom counterbalanced the negative charge of the electrons.

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