Consider the following statements and predict the wrong statement(s)
a. Half filled and fully filled orbitals have greater stability due to greater exchange energy and symmetrical distribution
b. The energy of $3 s$ orbital is less than $3 p$ orbital for hydrogen atom.
c. The uncertainty principle is $Δ E \times Δ t \leq \frac{h}{4 π}$
d. $E = - 2.178 \times 10^{- 18} (\frac{Z^{2}}{n^{2}}) J a t o m^{- 1}$ , can be used to calculate the change in energy when the electron changes orbit in H-atom

b and c only

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b, c and d only

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a and b only

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a and d only

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Solution

The correct option is A b and c only
(A) b and c only
because energy of 3s orbital is more than 3p orbital of hydrogen
atom and uncertainty principle is $△ x △ p \geq h$

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Similar questions

List - I	List - II
I) The electrons of same orbital differ in spin	a) Stability of half filled sublevel
II) Order of energy of orbitals is $2 s, 2 p, 3 s, 3 p, 4 s$	b) Stability of completely filled sublevel
III) Electronic configuration of $N$ is $1 s^{2} 2 s^{2} 2 p^{3}$	c) Pauli's principle
IV) Electric configuration of $C u$ is [Ar] $4 s^{1} 3 d^{10}$	d) Aufbau principle

C u

[A r] 4 s^{1} 3 d^{10}

d -

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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