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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A):An electron jumps from 5th to 2nd shell,number of possible transition state = 3.
Reason(R): Possible transition state
= ∑Δn = ∑5 − 2 .
  • a)
    Both Assertion and Reason are true and Reason is the correct explanation of assertion.
  • b)
    Both Assertion and Reason are true and Reason is not the correct explanation of assertion.
  • c)
    Assertion is true but Reason is false.
  • d)
    Assertion is false but Reason is false.
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
In the following question, a Statement of Assertion (A) is given follo...
Number of initial states - number of final states.

A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
B) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
C) Assertion (A) is true but Reason (R) is false.
D) Assertion (A) is false but Reason (R) is true.

The answer is A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Explanation:
When an electron jumps from the 5th to the 2nd shell, it can do so in three possible ways:

1. Directly from the 5th to the 2nd shell
2. From the 5th to the 4th shell, then from the 4th to the 2nd shell
3. From the 5th to the 3rd shell, then from the 3rd to the 2nd shell

Therefore, the number of possible transition states is 3. This is correctly explained by the Reason given.
Free Test
Community Answer
In the following question, a Statement of Assertion (A) is given follo...
The formula is (delta n)(delta n+1) / 2
and hence no. of possible transition are 6
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-Assertion(A):An electron jumps from 5th to 2nd shell,number of possible transition state = 3.Reason(R): Possible transition state= ∑Δn = ∑5 − 2 .a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.c)Assertion is true but Reason is false.d)Assertion is false but Reason is false.Correct answer is option 'D'. Can you explain this answer?
Question Description
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