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Question

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 3s orbital is less than 3p orbital for hydrogen atom.
c. The uncertainty principle is ΔE×Δth4π
d. E=2.178×1018(Z2n2)Jatom1, can be used to calculate the change in energy when the electron changes orbit in H-atom

A
b and c only
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B
b, c and d only
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C
a and b only
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D
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 xph

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