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Byju's Answer

Standard XII

Chemistry

Shapes of Orbitals and Nodes

Assertion: 3...

Question

Assertion:
$3 d_{z^{2}}$ orbital is spherically symmetrical.

Reason:
$3 d_{z^{2}}$ orbital is the only d-orbital which is spherical in shape.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Both Assertion and Reason are incorrect

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Solution

The correct option is E Both Assertion and Reason are incorrect

There are $5 d$ orbitals, and they all have complex geometry. Out of the five orbitals, the three $(d_{X Y}, d_{Y Z}, d_{X Z})$ project in between the axis and the other two $d_{Z}^{2}$ and $d_{X}^{2} - d_{Y}^{2}$ lie along the axis.

Only $s$ orbitals are spherically symmetric.

Thus, Both Assertion and Reason are incorrect

Hence, the correct option is $E$

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Similar questions

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

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and

H e

can be derived from Van der Waal's equation.

Q. Assertion : In the bonding molecular orbital (MO) of

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, the electron density is increased between the nuclei.
Reason : The bonding MO is

ψ_{A} + ψ_{B}

, which shows destructive interference of the combining electron waves.

Assertion (A) All collision of reactant molecules lead to product formation.

Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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Reason: A shell can have maximum

{2n}^{2}

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Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

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Assertion:3dz2 orbital is spherically symmetrical. Reason:3dz2 orbital is the only d-orbital which is spherical in shape.

Assertion:
$3 d_{z^{2}}$ orbital is spherically symmetrical.

Reason:
$3 d_{z^{2}}$ orbital is the only d-orbital which is spherical in shape.