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Question 10

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

(a) Pauli's exclusion principle

(b) Heisenberg's uncertainty principle

(c) Hund's rule of maximum multiplicity

(d) Aufbau principle

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Solution

Werner Heiseberg, a German physicist in 1927, stated uncertainity principle which states that it is impossible to determine simulataneously, the exact position and exact momentum of an electron.

Mathematically, Δx×Δph4π

The important implications of the Heisenberg uncertainity pricniple is that it rules out existence of definite paths or trajectories of electrons and other similar particles.


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