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Standard XII

Chemistry

Reactivity of Actinides

Assertion The...

Question

Assertion
The degree of complex formation in actinides decreases in the order:
$M^{4 +} > M O_{2}^{2 +} > M^{3 +} > M O_{2}^{+}$

Reason
Actinides form complexes with $π$ bonding ligands such as alkyl phosphines and thioethers.

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

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

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Both Assertion is correct but Reason incorrect.

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct and Reason is not correct explanation for Assertion

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Similar questions

Q. Assertion :The degree of complex formation in actinides decreases in the order

M^{4 +} > {M O}_{2}^{2 +} > M^{3 +} > {M O}_{2}^{+}

Reason: Actinides form complexes with

π

-bonding ligands such as alkyl phosphines and thioethers.

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

H_{2}

, 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.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

(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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Assertion The degree of complex formation in actinides decreases in the order: M4+>MO2+2>M3+>MO+2ReasonActinides form complexes with π bonding ligands such as alkyl phosphines and thioethers.

The correct option is B Both Assertion and Reason are correct and Reason is not correct explanation for Assertion

Assertion
The degree of complex formation in actinides decreases in the order:
$M^{4 +} > M O_{2}^{2 +} > M^{3 +} > M O_{2}^{+}$

Reason
Actinides form complexes with $π$ bonding ligands such as alkyl phosphines and thioethers.