| Assertion (A): Bohr model is not applicable for multi-electron model. |
| Reason (R): Bohr model cannot account for sublevel (s, p, d, f) orbitals and electron spin. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: A
Solution :
Option (A) is correct. Explanation: Bohr model works well for H and He+ having.one electron only. But it does not work for multi-electron atoms, since it cannot account for sublevel (s, p, d, f) orbitals and electron spin. So, assertion and reason both are true and reason explains the assertion.
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