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An element U has 13 electrons. According to Bohr’s model, what is the electron distribution, and why might Rutherford’s model predict instability for this atom?
- a)K: 2, L: 8, M: 3; Electrons would spiral into the nucleus due to energy loss
- b)K: 2, L: 7, M: 4; Electrons would gain energy and escape
- c)K: 2, L: 8, M: 3; Electrons would gain energy and orbit faster
- d)K: 2, L: 8, M: 3; Electrons would remain stable in circular orbits
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
An element U has 13 electrons. According to Bohr’s model, what i...
Electron distribution for an atom with 13 electrons can be described as follows:
- K shell: 2 electrons
- L shell: 8 electrons
- M shell: 3 electrons
According to Bohr's model, this arrangement is stable. However, Rutherford's model suggests potential instability for the following reasons:
- Electrons may lose energy and spiral into the nucleus.
- There is a risk of electrons gaining energy and escaping.
- Electrons in a circular orbit can become unstable over time.
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An element U has 13 electrons. According to Bohr’s model, what i...
Understanding Electron Distribution in Element U
Element U has 13 electrons, which need to be arranged according to the principles of Bohr's model of the atom. The correct distribution of electrons is:
- K Shell: 2 electrons
- L Shell: 8 electrons
- M Shell: 3 electrons
This distribution follows the maximum capacity of each shell, where the K shell can hold 2 electrons, the L shell can hold 8 electrons, and the M shell can hold up to 18 electrons.
Why Rutherford's Model Predicts Instability
Rutherford's model of the atom proposed that electrons orbit the nucleus much like planets around the sun. However, this model had significant limitations:
- Energy Loss: According to classical physics, an electron in circular motion should lose energy due to electromagnetic radiation. As it loses energy, it spirals inward toward the nucleus.
- Instability: This continuous loss of energy would lead to electrons eventually collapsing into the nucleus, causing the atom to become unstable and ultimately disintegrate.
The Bohr model, however, introduced quantized energy levels, which allowed electrons to occupy specific orbits without losing energy, explaining the stability of atoms.
Conclusion
Thus, the electron distribution for element U is K: 2, L: 8, M: 3. According to Rutherford's model, this configuration would be unstable due to the predicted spiral motion of electrons into the nucleus, a concept that was later refined by Bohr's model.
Element U has 13 electrons, which need to be arranged according to the principles of Bohr's model of the atom. The correct distribution of electrons is:
- K Shell: 2 electrons
- L Shell: 8 electrons
- M Shell: 3 electrons
This distribution follows the maximum capacity of each shell, where the K shell can hold 2 electrons, the L shell can hold 8 electrons, and the M shell can hold up to 18 electrons.
Why Rutherford's Model Predicts Instability
Rutherford's model of the atom proposed that electrons orbit the nucleus much like planets around the sun. However, this model had significant limitations:
- Energy Loss: According to classical physics, an electron in circular motion should lose energy due to electromagnetic radiation. As it loses energy, it spirals inward toward the nucleus.
- Instability: This continuous loss of energy would lead to electrons eventually collapsing into the nucleus, causing the atom to become unstable and ultimately disintegrate.
The Bohr model, however, introduced quantized energy levels, which allowed electrons to occupy specific orbits without losing energy, explaining the stability of atoms.
Conclusion
Thus, the electron distribution for element U is K: 2, L: 8, M: 3. According to Rutherford's model, this configuration would be unstable due to the predicted spiral motion of electrons into the nucleus, a concept that was later refined by Bohr's model.
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An element U has 13 electrons. According to Bohr’s model, what is the electron distribution, and why might Rutherford’s model predict instability for this atom?a)K: 2, L: 8, M: 3; Electrons would spiral into the nucleus due to energy lossb)K: 2, L: 7, M: 4; Electrons would gain energy and escapec)K: 2, L: 8, M: 3; Electrons would gain energy and orbit fasterd)K: 2, L: 8, M: 3; Electrons would remain stable in circular orbitsCorrect answer is option 'A'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about An element U has 13 electrons. According to Bohr’s model, what is the electron distribution, and why might Rutherford’s model predict instability for this atom?a)K: 2, L: 8, M: 3; Electrons would spiral into the nucleus due to energy lossb)K: 2, L: 7, M: 4; Electrons would gain energy and escapec)K: 2, L: 8, M: 3; Electrons would gain energy and orbit fasterd)K: 2, L: 8, M: 3; Electrons would remain stable in circular orbitsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An element U has 13 electrons. According to Bohr’s model, what is the electron distribution, and why might Rutherford’s model predict instability for this atom?a)K: 2, L: 8, M: 3; Electrons would spiral into the nucleus due to energy lossb)K: 2, L: 7, M: 4; Electrons would gain energy and escapec)K: 2, L: 8, M: 3; Electrons would gain energy and orbit fasterd)K: 2, L: 8, M: 3; Electrons would remain stable in circular orbitsCorrect answer is option 'A'. Can you explain this answer?.
An element U has 13 electrons. According to Bohr’s model, what is the electron distribution, and why might Rutherford’s model predict instability for this atom?a)K: 2, L: 8, M: 3; Electrons would spiral into the nucleus due to energy lossb)K: 2, L: 7, M: 4; Electrons would gain energy and escapec)K: 2, L: 8, M: 3; Electrons would gain energy and orbit fasterd)K: 2, L: 8, M: 3; Electrons would remain stable in circular orbitsCorrect answer is option 'A'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about An element U has 13 electrons. According to Bohr’s model, what is the electron distribution, and why might Rutherford’s model predict instability for this atom?a)K: 2, L: 8, M: 3; Electrons would spiral into the nucleus due to energy lossb)K: 2, L: 7, M: 4; Electrons would gain energy and escapec)K: 2, L: 8, M: 3; Electrons would gain energy and orbit fasterd)K: 2, L: 8, M: 3; Electrons would remain stable in circular orbitsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An element U has 13 electrons. According to Bohr’s model, what is the electron distribution, and why might Rutherford’s model predict instability for this atom?a)K: 2, L: 8, M: 3; Electrons would spiral into the nucleus due to energy lossb)K: 2, L: 7, M: 4; Electrons would gain energy and escapec)K: 2, L: 8, M: 3; Electrons would gain energy and orbit fasterd)K: 2, L: 8, M: 3; Electrons would remain stable in circular orbitsCorrect answer is option 'A'. Can you explain this answer?.
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