Simultaneous determination of exact position and momentum of an electron is:

Possible

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Not possible

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Sometimes possible and sometimes impossible

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Momentum cannot be determined

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Solution

The correct option is B
Not possible

Simultaneous determination of exact position and momentum of an electron is not possible. This is according to Heisenberg's uncertainty principle.

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Simultaneous determination of exact position and momentum of an electron is

Rules	Statements
A) Hund's rule of maximum multiplicity	P) No two electrons in an atom can have the same set of quantum numbers
B) Aufbau principle	Q) Half-filled and completely filled orbitals have extra stability
C) Pauli's exclusion principle	R) Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied
D) Hiesenberg's Uncertainity Principle	S) It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously
	T) In the ground state of atoms, orbitals are filled in the order of their increasing energies

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