In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options:

Statement - 1 : Electromagnetic radiation will be emitted for the transition $2 P_{z} \to 2 p_{x}$ .

Statement - 2 : No transition of electron takes place between $2 P_{z}$ and $2 P_{x}$ orbitals.

Both Statement-1 and Statement - 2 are true and Statement - 2 is the correct explanation of Statement - 1

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Both Statement - 1 and Statement - 2 are true and Statement - 2 is not the correct explanation of Statement - 1

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Statement - 1 is true but Statement - 2 is false.

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Statement - 1 is false but Statement - 2 is true.

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Solution

The correct option is D
Statement - 1 is false but Statement - 2 is true.

$2 P_{x}$ and $2 p_{z}$ orbitals are degenarate i.e. they are of equal energies and hence no transition of electron between them is possible.

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In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options:

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Statement - 2 : No transition of electron takes place between $2 P_{z}$ and $2 P_{x}$ orbitals.

Statement - 1 : The transition of electrons $n_{3} \to n_{2}$ in H - atom will emit radiation of higher frequency than $n_{4} \to n_{3}$ .

Statement - 2 : Principal shells $n_{2}$ $n_{3}$ have lower energy than $n_{4}$ .

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Statement-2: Addition of hydrogen is a stereospecific reaction.

Statement - 1 : The transition of electrons $n_{3} \to n_{2}$ in H - atom will emit radiation of higher frequency than $n_{4} \to n_{3}$ .

Statement - 2 : Principal shells $n_{2}$ $n_{3}$ have lower energy than $n_{4}$ .

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The correct option is D Statement - 1 is false but Statement - 2 is true. 2Px and 2pz orbitals are degenarate i.e. they are of equal energies and hence no transition of electron between them is possible.

The correct option is D
Statement - 1 is false but Statement - 2 is true.

$2 P_{x}$ and $2 p_{z}$ orbitals are degenarate i.e. they are of equal energies and hence no transition of electron between them is possible.