Which of the following is responsible to rule out the existence of definite paths or trajectories of electrons?

Options

A. Pauli's exclusion principle
B. Heisenberg's uncertianity principle
C. Hund's rule of maximum multiplicity
D. Aufbau principle

Explanation

To solve the question "Which of the following is responsible to rule out the existence of definite paths or trajectories of electrons?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which principle or theory negates the idea that electrons have fixed paths or trajectories.

2. **Identifying Key Concepts**: The key concepts here are "definite paths", "trajectories of electrons", and principles that relate to the behavior of electrons.

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