Question

Total number of transitions of an electron from nth shell to 2nd shell will be (A) (n-1)(n-2)/2 (B) n(n-1)/2 (C) n(n+1)/2 (D) n/2

Answer 1

Answer:

Option D

N/2

Hope u understand

Answer 2

Total number of transitions of an electron from nth shell to 2nd shell will be  (n-1)(n-2)/2

Option a

Explanation:

• The transition depends on the shell from which the transition is taking place to the shell from which it will be transformed. In the above question it is given that the transfer takes place from the nth shell to the second shell.
• The equation for this is given by, no fo transition=

• ( n2-n1)(n2-n1+1) /2
• = (N- 2)(N-2+1)/2
• =(n-1)(n-2)/2
• hence by the equation we find that the number of possible transition in the following case is equal to (n-1)(n-2)/2

To know more,

radius of the second orbit of an element is 0.070 NM the energy ...

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