Q3. Assertion (A): It is impossible to determine the exact position and exact momentum of an electron simultaneously. Reason (R): The path of an electron in an atom is clearly defined. Both A and R are true and R is the correct explanation of A. Both A and R are true and R is not the correct explanation of A. A is true and R is false. Both A and R are false.
Answer. Correct Answer is (3.) A is true and R is false. The exact position and exact momentum of an electron cannot be determined simultaneously, according to Heisenberg’s uncertainty principle. As a result, the electron’s path in an atom is not well defined.
