Direction: In the following questions, a statement of assertion (A) is...
Direction of electric field is from region of high potential to low potential & electron or any -ve charged particle will move against the field or lower potential to higher potential.
View all questions of this test
Direction: In the following questions, a statement of assertion (A) is...
Assertion: Electrons moving in the same orbit will lose or gain energy.
Reason: On jumping from higher to lower energy level, the electron will gain energy.
The correct answer is option D - Assertion (A) is false but reason (R) is true.
Explanation:
- The assertion states that electrons moving in the same orbit will lose or gain energy. However, this statement is not true.
- Electrons moving in the same orbit do not lose or gain energy. The energy of an electron in an orbit remains constant unless it undergoes a transition to a different energy level.
- The reason states that on jumping from a higher energy level to a lower energy level, the electron will gain energy. This statement is true.
- When an electron jumps from a higher energy level to a lower energy level, it releases energy in the form of photons or light. The energy of the electron decreases as it transitions to a lower energy level.
- The energy of an electron can be quantized, meaning it can only exist in certain allowed energy levels. When an electron absorbs energy, it can transition to a higher energy level. Conversely, when an electron releases energy, it transitions to a lower energy level.
- The energy levels of electrons in an atom are determined by the arrangement of electrons in different shells or orbitals.
- The electrons in an atom can occupy different energy levels, and they move in specific orbits around the nucleus. The energy levels are labeled as K, L, M, N, etc., with K being the lowest energy level closest to the nucleus.
- Electrons move in discrete energy levels based on the principle of quantization. They do not continuously lose or gain energy while moving in the same orbit.
In summary, the assertion is false because electrons moving in the same orbit do not lose or gain energy. However, the reason is true because when an electron jumps from a higher energy level to a lower energy level, it does gain energy.
Direction: In the following questions, a statement of assertion (A) is...
Options are wrong it should be Assertion and reason both are false
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.