Chemistry-Quantum Mechanical Model
NEET Chemistry Quantum Mechanical Model Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 11
Assertion (A): In a 2s orbital, the probability density first decreases to zero and then increases again to a small maximum before decreasing. | Reason (R): The square of the wave function gives the probability density of the electron at a point.
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 but R is true.
Correct Answer
Option A
Detailed Explanation
In the NCERT context, it is mentioned that for the 2s orbital, the probability density decreases sharply to zero and then increases to a small maxima before decreasing again. This behavior is explained by the square of the wave function, which determines the probability density.
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