Class 12 Exam > Class 12 Questions > Which of these is true?a)The alpha particles ...
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Which of these is true?
- a)The alpha particles used in Rutherford’s experiment are positively charged particles
- b)Dalton assumed that atoms are made up of electrons, protons, and neutrons
- c)In Rutherford’s alpha scattering experiment, all of the alpha particles passed through the gold foil.
- d)JJ Thomson determined the charge and mass of electrons
Correct answer is 'A'. Can you explain this answer?
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Which of these is true?a)The alpha particles used in Rutherford’...
**Explanation:**
The correct answer is **a) The alpha particles used in Rutherford's experiment are positively charged particles**.
Rutherford's experiment, also known as the gold foil experiment, was conducted in 1909 by Ernest Rutherford and his colleagues Hans Geiger and Ernest Marsden. The experiment aimed to understand the structure of the atom and investigate the distribution of positive charge within it.
In this experiment, Rutherford and his team bombarded a thin gold foil with a beam of alpha particles. Alpha particles are positively charged particles that consist of two protons and two neutrons, which are the same as helium nuclei. They are emitted from a radioactive source, such as radium or polonium.
Rutherford observed that while most of the alpha particles passed straight through the gold foil, some of them were deflected at different angles, and a very small fraction bounced back in the direction opposite to the source. This unexpected result led to the discovery of the atomic nucleus and the concept of a mostly empty space within the atom.
Based on the observations from the experiment, Rutherford proposed a new atomic model known as the nuclear model. According to this model, atoms have a dense, positively charged nucleus at the center, which contains most of the atom's mass. The electrons, which are negatively charged particles, orbit around the nucleus in specific energy levels.
Therefore, the correct answer is a) The alpha particles used in Rutherford's experiment are positively charged particles.
The correct answer is **a) The alpha particles used in Rutherford's experiment are positively charged particles**.
Rutherford's experiment, also known as the gold foil experiment, was conducted in 1909 by Ernest Rutherford and his colleagues Hans Geiger and Ernest Marsden. The experiment aimed to understand the structure of the atom and investigate the distribution of positive charge within it.
In this experiment, Rutherford and his team bombarded a thin gold foil with a beam of alpha particles. Alpha particles are positively charged particles that consist of two protons and two neutrons, which are the same as helium nuclei. They are emitted from a radioactive source, such as radium or polonium.
Rutherford observed that while most of the alpha particles passed straight through the gold foil, some of them were deflected at different angles, and a very small fraction bounced back in the direction opposite to the source. This unexpected result led to the discovery of the atomic nucleus and the concept of a mostly empty space within the atom.
Based on the observations from the experiment, Rutherford proposed a new atomic model known as the nuclear model. According to this model, atoms have a dense, positively charged nucleus at the center, which contains most of the atom's mass. The electrons, which are negatively charged particles, orbit around the nucleus in specific energy levels.
Therefore, the correct answer is a) The alpha particles used in Rutherford's experiment are positively charged particles.
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Which of these is true?a)The alpha particles used in Rutherford’...
The answer is A because Rutherford in his experiment used the nucleus of helium atom as alpha particles which were positively charged......
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Which of these is true?a)The alpha particles used in Rutherford’s experiment are positively charged particlesb)Dalton assumed that atoms are made up of electrons, protons, and neutronsc)In Rutherford’s alpha scattering experiment, all of the alpha particles passed through the gold foil.d)JJ Thomson determined the charge and mass of electronsCorrect answer is 'A'. Can you explain this answer?
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Which of these is true?a)The alpha particles used in Rutherford’s experiment are positively charged particlesb)Dalton assumed that atoms are made up of electrons, protons, and neutronsc)In Rutherford’s alpha scattering experiment, all of the alpha particles passed through the gold foil.d)JJ Thomson determined the charge and mass of electronsCorrect answer is 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which of these is true?a)The alpha particles used in Rutherford’s experiment are positively charged particlesb)Dalton assumed that atoms are made up of electrons, protons, and neutronsc)In Rutherford’s alpha scattering experiment, all of the alpha particles passed through the gold foil.d)JJ Thomson determined the charge and mass of electronsCorrect answer is 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of these is true?a)The alpha particles used in Rutherford’s experiment are positively charged particlesb)Dalton assumed that atoms are made up of electrons, protons, and neutronsc)In Rutherford’s alpha scattering experiment, all of the alpha particles passed through the gold foil.d)JJ Thomson determined the charge and mass of electronsCorrect answer is 'A'. Can you explain this answer?.
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